8-K 1 arm05007_10507.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2005 ADJUSTABLE RATE MORTGAGE TRUST Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-7 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-120966-18 Pooling and Servicing Agreement) (Commission 54-2176706 (State or other File Number) 54-2176707 jurisdiction 54-2176708 of Incorporation) 54-2176709 IRS EIN C/O Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act(17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act(17 CFR 240.13e-4(c)) ITEM 8.01 Other Events On July 25, 2005 a distribution was made to holders of ADJUSTABLE RATE MORTGAGE TRUST, Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-7 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Adjustable Rate Mortgage-Backed P/T Cert , Series 2005-7 Trust, relating to the July 25, 2005 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ADJUSTABLE RATE MORTGAGE TRUST Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-7 Trust (Registrant) By: Wells Fargo Bank, N.A. as Trust Administrator By: /s/ Beth Belfield as Officer By: Beth Belfield as Officer Date: 7/25/2005 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-7 Trust, relating to the July 25, 2005 distribution. EX-99.1

~~UNITED~~Credit ~~STATES~~Suisse First Boston Mortgage Securities Corp. Adjustable Rate Mortgage-Backed P/T Cert Record Date: 6/30/2005 Distribution Date: 7/25/2005 Credit Suisse First Boston Mortgage Securities Corp. Adjustable Rate Mortgage-Backed P/T Cert Series ARMT 2005-7 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 www.ctslink.com Telephone: (301) 815-6600 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Class CUSIP Description Rate Balance Distribution 1-A-1 007036MQ6 SEN 4.98128% 32,330,000.00 134,203.95 1-A-2 007036NY8 SEN 4.98128% 3,592,000.00 14,910.63 AR 007036NS1 SEN 4.98128% 50.00 0.21 AR-L 007036NT9 SEN 4.98128% 50.00 0.21 2-A-1 007036MR4 SEN 4.95002% 115,500,000.00 476,438.98 2-A-2-1 007036MT0 SEN 4.95002% 32,440,000.00 133,815.42 2-A-2-2 007036MU7 SEN 4.95002% 2,075,000.00 8,559.40 2-A-X 007036MS2 SEN 0.27240% 0.00 34,053.41 3-A-1 007036MV5 SEN 5.29260% 43,625,000.00 192,408.20 3-A-2 007036MW3 SEN 5.29260% 2,785,000.00 12,283.25 4-A-1 007036MX1 SEN 5.53664% 141,680,000.00 653,692.35 4-A-2 007036MY9 SEN 5.53664% 9,045,000.00 41,732.41 5-A-1 007036MZ6 SEN 4.93817% 53,810,000.00 221,435.60 6-A-1 007036NA0 SEN 5.26615% 233,965,000.00 1,026,745.08 C-B-1 007036NM4 SUB 5.27741% 18,910,000.00 83,163.21 C-B-2 007036NN2 SUB 5.27741% 8,920,000.00 39,228.76 C-B-3 007036NP7 SUB 5.27741% 3,570,000.00 15,700.30 C-B-4 007036NQ5 SUB 5.27741% 1,425,000.00 6,266.93 C-B-5 007036NR3 SUB 5.27741% 1,425,000.00 6,266.93 C-B-6 007036NU6 SUB 5.27741% 2,850,000.00 12,533.85 C-B-7 007036NV4 SUB 5.27741% 3,565,000.00 15,678.31 C-B-8 007036NW2 SUB 5.27741% 2,152,391.00 9,465.88 7-A-1-1 007036NB8 SEN 3.58000% 86,040,000.00 213,905.00 7-A-1-2 007036NC6 SEN 3.65000% 9,560,000.00 24,231.94 7-A-2-1 007036ND4 SEN 3.58000% 259,500,000.00 645,145.83 7-A-2-2 007036NE2 SEN 3.65000% 28,860,000.00 73,152.08 7-M-1 007036NH5 MEZ 3.83000% 15,670,000.00 41,677.85 7-M-2 007036NJ1 MEZ 4.10000% 9,610,000.00 27,361.81 7-M-3 007036NK8 MEZ 4.58000% 5,010,000.00 15,934.58 7-M-4 007036NL6 MEZ 5.53000% 3,554,000.00 13,648.35 7-X 007036NX0 A 0.00000% 621.01 0.00 P 007036NZ5 A 0.00000% 0.00 35,050.82 Totals 1,131,469,112.01 4,228,691.53

~~SECURITIES~~Certificateholder ~~AND~~Distribution ~~EXCHANGE~~Summary ~~COMMISSION~~(continued) Current Ending Cumulative Principal Realized Certificate Total Realized Class Distribution Loss Balance Distribution Losses 1-A-1 406,860.75 0.00 31,923,139.25 541,064.70 0.00 1-A-2 45,203.95 0.00 3,546,796.05 60,114.58 0.00 AR 50.00 0.00 0.00 50.21 0.00 AR-L 50.00 0.00 0.00 50.21 0.00 2-A-1 5,508,508.55 0.00 109,991,491.45 5,984,947.53 0.00 2-A-2-1 0.00 0.00 32,440,000.00 133,815.42 0.00 2-A-2-2 0.00 0.00 2,075,000.00 8,559.40 0.00 2-A-X 0.00 0.00 0.00 34,053.41 0.00 3-A-1 12,594.02 0.00 43,612,405.98 205,002.22 0.00 3-A-2 804.00 0.00 2,784,196.00 13,087.25 0.00 4-A-1 2,626,415.93 0.00 139,053,584.07 3,280,108.28 0.00 4-A-2 167,673.15 0.00 8,877,326.85 209,405.56 0.00 5-A-1 1,118,495.12 0.00 52,691,504.88 1,339,930.72 0.00 6-A-1 4,489,162.93 0.00 229,475,837.07 5,515,908.01 0.00 C-B-1 2,873.40 0.00 18,907,126.60 86,036.61 0.00 C-B-2 1,355.41 0.00 8,918,644.59 40,584.17 0.00 C-B-3 542.47 0.00 3,569,457.53 16,242.77 0.00 C-B-4 216.53 0.00 1,424,783.47 6,483.46 0.00 C-B-5 216.53 0.00 1,424,783.47 6,483.46 0.00 C-B-6 433.06 0.00 2,849,566.94 12,966.91 0.00 C-B-7 541.71 0.00 3,564,458.29 16,220.02 0.00 C-B-8 327.06 0.00 2,152,063.58 9,792.94 0.00 7-A-1-1 4,498,355.68 0.00 81,541,644.32 4,712,260.68 0.00 7-A-1-2 499,817.30 0.00 9,060,182.70 524,049.24 0.00 7-A-2-1 9,872,588.61 0.00 249,627,411.39 10,517,734.44 0.00 7-A-2-2 1,097,968.81 0.00 27,762,031.19 1,171,120.89 0.00 7-M-1 0.00 0.00 15,670,000.00 41,677.85 0.00 7-M-2 0.00 0.00 9,610,000.00 27,361.81 0.00 7-M-3 0.00 0.00 5,010,000.00 15,934.58 0.00 7-M-4 0.00 0.00 3,554,000.00 13,648.35 0.00 7-X 0.00 0.00 1,049,186.90 0.00 0.00 P 0.00 0.00 0.00 35,050.82 0.00 Totals 30,351,054.97 0.00 1,102,166,622.57 34,579,746.50 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

~~Washington~~Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) 1-A-1 32,330,000.00 D32,330,000.00 6,418.62 400,442.13 0.00 0.00 1-A-2 3,592,000.00 3,592,000.00 713.14 44,490.82 0.00 0.00 AR 50.00 50.00 0.79 49.21 0.00 0.00 AR-L 50.00 50.00 0.79 49.21 0.00 0.00 2-A-1 115,500,000.00 115,500,000.00 20,462.04 5,488,046.51 0.00 0.00 2-A-2-1 32,440,000.00 32,440,000.00 0.00 0.00 0.00 0.00 2-A-2-2 2,075,000.00 2,075,000.00 0.00 0.00 0.00 0.00 2-A-X 0.00 0.00 0.00 0.00 0.00 0.00 3-A-1 43,625,000.00 43,625,000.00 10,958.20 1,635.82 0.00 0.00 3-A-2 2,785,000.00 2,785,000.00 699.57 104.43 0.00 0.00 4-A-1 141,680,000.00 141,680,000.00 23,345.79 2,603,070.14 0.00 0.00 4-A-2 9,045,000.00 9,045,000.00 1,490.42 166,182.73 0.00 0.00 5-A-1 53,810,000.00 53,810,000.00 5,954.82 1,112,540.30 0.00 0.00 6-A-1 233,965,000.00 233,965,000.00 31,886.73 4,457,276.20 0.00 0.00 C-B-1 18,910,000.00 ~~20549~~18,910,000.00 2,873.40 0.00 0.00 0.00 C-B-2 8,920,000.00 8,920,000.00 1,355.41 0.00 0.00 0.00 C-B-3 3,570,000.00 3,570,000.00 542.47 0.00 0.00 0.00 C-B-4 1,425,000.00 1,425,000.00 216.53 0.00 0.00 0.00 C-B-5 1,425,000.00 1,425,000.00 216.53 0.00 0.00 0.00 C-B-6 2,850,000.00 2,850,000.00 433.06 0.00 0.00 0.00 C-B-7 3,565,000.00 3,565,000.00 541.71 0.00 0.00 0.00 C-B-8 2,152,391.00 2,152,391.00 327.06 0.00 0.00 0.00 7-A-1-1 86,040,000.00 86,040,000.00 0.00 4,498,355.68 0.00 0.00 7-A-1-2 9,560,000.00 9,560,000.00 0.00 499,817.30 0.00 0.00 7-A-2-1 259,500,000.00 259,500,000.00 0.00 9,872,588.61 0.00 0.00 7-A-2-2 28,860,000.00 28,860,000.00 0.00 1,097,968.81 0.00 0.00 7-M-1 15,670,000.00 15,670,000.00 0.00 0.00 0.00 0.00 7-M-2 9,610,000.00 9,610,000.00 0.00 0.00 0.00 0.00 7-M-3 5,010,000.00 5,010,000.00 0.00 0.00 0.00 0.00 7-M-4 3,554,000.00 3,554,000.00 0.00 0.00 0.00 0.00 7-X 621.01 621.01 0.00 0.00 0.00 0.00 P 0.00 0.00 0.00 0.00 0.00 0.00 Totals 1,131,469,112.01 1,131,469,112.01 108,437.08 30,242,617.90 0.00 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~FORM~~Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution 1-A-1 406,860.75 31,923,139.25 0.98741538 406,860.75 1-A-2 45,203.95 3,546,796.05 0.98741538 45,203.95 AR 50.00 0.00 0.00000000 50.00 AR-L 50.00 0.00 0.00000000 50.00 2-A-1 5,508,508.55 109,991,491.45 0.95230729 5,508,508.55 2-A-2-1 0.00 32,440,000.00 1.00000000 0.00 2-A-2-2 0.00 2,075,000.00 1.00000000 0.00 2-A-X 0.00 0.00 0.00000000 0.00 3-A-1 12,594.02 43,612,405.98 0.99971131 12,594.02 3-A-2 804.00 2,784,196.00 0.99971131 804.00 4-A-1 2,626,415.93 139,053,584.07 0.98146234 2,626,415.93 4-A-2 167,673.15 8,877,326.85 0.98146234 167,673.15 5-KA-1 1,118,495.12 52,691,504.88 0.97921399 1,118,495.12 6-A-1 4,489,162.93 229,475,837.07 0.98081267 4,489,162.93 C-B-1 2,873.40 18,907,126.60 0.99984805 2,873.40 C-B-2 1,355.41 8,918,644.59 0.99984805 1,355.41 C-B-3 542.47 3,569,457.53 0.99984805 542.47 C-B-4 216.53 1,424,783.47 0.99984805 216.53 C-B-5 216.53 1,424,783.47 0.99984805 216.53 C-B-6 433.06 2,849,566.94 0.99984805 433.06 C-B-7 541.71 3,564,458.29 0.99984805 541.71 C-B-8 327.06 2,152,063.58 0.99984788 327.06 7-A-1-1 4,498,355.68 81,541,644.32 0.94771786 4,498,355.68 7-A-1-2 499,817.30 9,060,182.70 0.94771786 499,817.30 7-A-2-1 9,872,588.61 249,627,411.39 0.96195534 9,872,588.61 7-A-2-2 1,097,968.81 27,762,031.19 0.96195534 1,097,968.81 7-M-1 0.00 15,670,000.00 1.00000000 0.00 7-M-2 0.00 9,610,000.00 1.00000000 0.00 7-M-3 0.00 5,010,000.00 1.00000000 0.00 7-M-4 0.00 3,554,000.00 1.00000000 0.00 7-X 0.00 1,049,186.90 1,689.48471039 0.00 P 0.00 0.00 0.00000000 0.00 Totals 30,351,054.97 1,102,166,622.57 0.97410226 30,351,054.97

~~CURRENT~~Principal ~~REPORT~~Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion 1-A-1 32,330,000.00 1000.00000000 0.19853449 12.38608506 0.00000000 1-A-2 3,592,000.00 1000.00000000 0.19853563 12.38608575 0.00000000 AR 50.00 1000.00000000 15.80000000 984.20000000 0.00000000 AR-L 50.00 1000.00000000 15.80000000 984.20000000 0.00000000 2-A-1 115,500,000.00 1000.00000000 0.17716052 47.51555420 0.00000000 2-A-2-1 32,440,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 2-A-2-2 2,075,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 2-A-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 3-A-1 43,625,000.00 1000.00000000 0.25119083 0.03749731 0.00000000 3-A-2 2,785,000.00 1000.00000000 0.25119210 0.03749731 0.00000000 4-A-1 141,680,000.00 1000.00000000 0.16477830 18.37288354 0.00000000 4-A-2 9,045,000.00 1000.00000000 0.16477833 18.37288336 0.00000000 5-A-1 53,810,000.00 1000.00000000 0.11066382 20.67534473 0.00000000 6-A-1 233,965,000.00 1000.00000000 0.13628846 19.05103840 0.00000000 C-B-1 18,910,000.00 1000.00000000 0.15195135 0.00000000 0.00000000 C-B-2 8,920,000.00 1000.00000000 0.15195179 0.00000000 0.00000000 C-B-3 3,570,000.00 1000.00000000 0.15195238 0.00000000 0.00000000 C-B-4 1,425,000.00 1000.00000000 0.15195088 0.00000000 0.00000000 C-B-5 1,425,000.00 1000.00000000 0.15195088 0.00000000 0.00000000 C-B-6 2,850,000.00 1000.00000000 0.15195088 0.00000000 0.00000000 C-B-7 3,565,000.00 1000.00000000 0.15195231 0.00000000 0.00000000 C-B-8 2,152,391.00 1000.00000000 0.15195195 0.00000000 0.00000000 7-A-1-1 86,040,000.00 1000.00000000 0.00000000 52.28214412 0.00000000 7-A-1-2 9,560,000.00 1000.00000000 0.00000000 52.28214435 0.00000000 7-A-2-1 259,500,000.00 1000.00000000 0.00000000 38.04465746 0.00000000 7-A-2-2 28,860,000.00 1000.00000000 0.00000000 38.04465731 0.00000000 7-M-1 15,670,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 7-M-2 9,610,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 7-M-3 5,010,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 7-M-4 3,554,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 7-X 621.01 1000.00000000 0.00000000 0.00000000 0.00000000 P 0.00 0.00000000 0.00000000 0.00000000 0.00000000

~~Pursuant~~Principal toDistribution ~~Section~~Factors 13Statement OR(continued) 15Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (d3) ofReduction Balance Percentage Distribution 1-A-1 0.00000000 12.58461955 987.41538045 0.98741538 12.58461955 1-A-2 0.00000000 12.58461860 987.41538140 0.98741538 12.58461860 AR 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 AR-L 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 2-A-1 0.00000000 47.69271472 952.30728528 0.95230729 47.69271472 2-A-2-1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 2-A-2-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 2-A-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 3-A-1 0.00000000 0.28868814 999.71131186 0.99971131 0.28868814 3-A-2 0.00000000 0.28868941 999.71131059 0.99971131 0.28868941 4-A-1 0.00000000 18.53766184 981.46233816 0.98146234 18.53766184 4-A-2 0.00000000 18.53766169 981.46233831 0.98146234 18.53766169 5-A-1 0.00000000 20.78600855 979.21399145 0.97921399 20.78600855 6-A-1 0.00000000 19.18732687 980.81267313 0.98081267 19.18732687 C-B-1 0.00000000 0.15195135 999.84804865 0.99984805 0.15195135 C-B-2 0.00000000 0.15195179 999.84804821 0.99984805 0.15195179 C-B-3 0.00000000 0.15195238 999.84804762 0.99984805 0.15195238 C-B-4 0.00000000 0.15195088 999.84804912 0.99984805 0.15195088 C-B-5 0.00000000 0.15195088 999.84804912 0.99984805 0.15195088 C-B-6 0.00000000 0.15195088 999.84804912 0.99984805 0.15195088 C-B-7 0.00000000 0.15195231 999.84804769 0.99984805 0.15195231 C-B-8 0.00000000 0.15195195 999.84788080 0.99984788 0.15195195 7-A-1-1 0.00000000 52.28214412 947.71785588 0.94771786 52.28214412 7-A-1-2 0.00000000 52.28214435 947.71785565 0.94771786 52.28214435 7-A-2-1 0.00000000 38.04465746 961.95534254 0.96195534 38.04465746 7-A-2-2 0.00000000 38.04465731 961.95534269 0.96195534 38.04465731 7-M-1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 7-M-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 7-M-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 7-M-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 7-X 0.00000000 0.00000000 1,689,484.71039114 1689.48471039 0.00000000 P 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (3) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~The~~Interest ~~Securities~~Distribution ~~Exchange~~Statement ~~Act~~Beginning Payment of ~~1934~~Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall 1-A-1 32,330,000.00 4.98128% 32,330,000.00 134,203.94 0.00 0.00 1-A-2 3,592,000.00 4.98128% 3,592,000.00 14,910.63 0.00 0.00 AR 50.00 4.98128% 50.00 0.21 0.00 0.00 AR-L 50.00 4.98128% 50.00 0.21 0.00 0.00 2-A-1 115,500,000.00 4.95002% 115,500,000.00 476,438.97 0.00 0.00 2-A-2-1 32,440,000.00 4.95002% 32,440,000.00 133,815.41 0.00 0.00 2-A-2-2 2,075,000.00 4.95002% 2,075,000.00 8,559.40 0.00 0.00 2-A-X 0.00 0.27240% 150,015,000.00 34,053.41 0.00 0.00 3-A-1 43,625,000.00 5.29260% 43,625,000.00 192,408.21 0.00 0.00 3-A-2 2,785,000.00 5.29260% 2,785,000.00 12,283.25 0.00 0.00 4-A-1 141,680,000.00 5.53664% 141,680,000.00 653,692.34 0.00 0.00 4-A-2 9,045,000.00 5.53664% 9,045,000.00 41,732.41 0.00 0.00 5-A-1 53,810,000.00 4.93817% 53,810,000.00 221,435.59 0.00 0.00 6-A-1 233,965,000.00 5.26615% 233,965,000.00 1,026,745.07 0.00 0.00 C-B-1 18,910,000.00 5.27741% 18,910,000.00 83,163.20 0.00 0.00 C-B-2 8,920,000.00 5.27741% 8,920,000.00 39,228.76 0.00 0.00 C-B-3 3,570,000.00 5.27741% 3,570,000.00 15,700.30 0.00 0.00 C-B-4 1,425,000.00 5.27741% 1,425,000.00 6,266.93 0.00 0.00 C-B-5 1,425,000.00 5.27741% 1,425,000.00 6,266.93 0.00 0.00 C-B-6 2,850,000.00 5.27741% 2,850,000.00 12,533.85 0.00 0.00 C-B-7 3,565,000.00 5.27741% 3,565,000.00 15,678.31 0.00 0.00 C-B-8 2,152,391.00 5.27741% 2,152,391.00 9,465.88 0.00 0.00 7-A-1-1 86,040,000.00 3.58000% 86,040,000.00 213,905.00 0.00 0.00 7-A-1-2 9,560,000.00 3.65000% 9,560,000.00 24,231.94 0.00 0.00 7-A-2-1 259,500,000.00 3.58000% 259,500,000.00 645,145.83 0.00 0.00 7-A-2-2 28,860,000.00 3.65000% 28,860,000.00 73,152.08 0.00 0.00 7-M-1 15,670,000.00 3.83000% 15,670,000.00 41,677.85 0.00 0.00 7-M-2 9,610,000.00 4.10000% 9,610,000.00 27,361.81 0.00 0.00 7-M-3 5,010,000.00 4.58000% 5,010,000.00 15,934.58 0.00 0.00 7-M-4 3,554,000.00 5.53000% 3,554,000.00 13,648.35 0.00 0.00 7-X 621.01 0.00000% 417,804,621.01 0.00 0.00 0.00 P 0.00 0.00000% 0.00 0.00 0.00 0.00 Totals 1,131,469,112.01 4,193,640.65 0.00 0.00

~~Date~~Interest ofDistribution ~~Report~~Statement (~~Date~~continued) ofRemaining ~~earliest~~Ending ~~event~~Non-Supported ~~reported~~Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) ~~June~~Distribution Shortfall Balance 1-A-1 0.00 0.00 134,203.95 0.00 31,923,139.25 1-A-2 0.00 0.00 14,910.63 0.00 3,546,796.05 AR 0.00 0.00 0.21 0.00 0.00 AR-L 0.00 0.00 0.21 0.00 0.00 2-A-1 0.00 0.00 476,438.98 0.00 109,991,491.45 2-A-2-1 0.00 0.00 133,815.42 0.00 32,440,000.00 2-A-2-2 0.00 0.00 8,559.40 0.00 2,075,000.00 2-A-X 0.00 0.00 34,053.41 0.00 144,506,491.45 3-A-1 0.00 0.00 192,408.20 0.00 43,612,405.98 3-A-2 0.00 0.00 12,283.25 0.00 2,784,196.00 4-A-1 0.00 0.00 653,692.35 0.00 139,053,584.07 4-A-2 0.00 0.00 41,732.41 0.00 8,877,326.85 5-A-1 0.00 0.00 221,435.60 0.00 52,691,504.88 6-A-1 0.00 0.00 1,026,745.08 0.00 229,475,837.07 C-B-1 0.00 0.00 83,163.21 0.00 18,907,126.60 C-B-2 0.00 0.00 39,228.76 0.00 8,918,644.59 C-B-3 0.00 0.00 15,700.30 0.00 3,569,457.53 ~~2005~~C-B-4 0.00 0.00 6,266.93 0.00 1,424,783.47 C-B-5 0.00 0.00 6,266.93 0.00 1,424,783.47 C-B-6 0.00 0.00 12,533.85 0.00 2,849,566.94 C-B-7 0.00 0.00 15,678.31 0.00 3,564,458.29 C-B-8 0.00 0.00 9,465.88 0.00 2,152,063.58 7-A-1-1 0.00 0.00 213,905.00 0.00 81,541,644.32 7-A-1-2 0.00 0.00 24,231.94 0.00 9,060,182.70 7-A-2-1 0.00 0.00 645,145.83 0.00 249,627,411.39 7-A-2-2 0.00 0.00 73,152.08 0.00 27,762,031.19 7-M-1 0.00 0.00 41,677.85 0.00 15,670,000.00 7-M-2 0.00 0.00 27,361.81 0.00 9,610,000.00 7-M-3 0.00 0.00 15,934.58 0.00 5,010,000.00 7-M-4 0.00 0.00 13,648.35 0.00 3,554,000.00 7-X 0.00 0.00 0.00 0.00 402,884,456.50 P 0.00 0.00 35,050.82 0.00 0.00 Totals 0.00 0.00 4,228,691.53 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~CREDIT~~Interest ~~SUISSE~~Distribution ~~FIRST~~Factors ~~BOSTON~~Statement ~~MORTGAGE~~Beginning ~~SECURITIES~~Payment ~~CORP~~of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall 1-A-1 32,330,000.00 4.98128% 1000.00000000 4.15106526 0.00000000 0.00000000 1-A-2 3,592,000.00 4.98128% 1000.00000000 4.15106626 0.00000000 0.00000000 AR 50.00 4.98128% 1000.00000000 4.20000000 0.00000000 0.00000000 AR-L 50.00 4.98128% 1000.00000000 4.20000000 0.00000000 0.00000000 2-A-1 115,500,000.00 4.95002% 1000.00000000 4.12501273 0.00000000 0.00000000 2-A-2-1 32,440,000.00 4.95002% 1000.00000000 4.12501264 0.00000000 0.00000000 2-A-2-2 2,075,000.00 4.95002% 1000.00000000 4.12501205 0.00000000 0.00000000 2-A-X 0.00 0.27240% 1000.00000000 0.22700003 0.00000000 0.00000000 3-A-1 43,625,000.00 5.29260% 1000.00000000 4.41050338 0.00000000 0.00000000 3-A-2 2,785,000.00 5.29260% 1000.00000000 4.41050269 0.00000000 0.00000000 4-A-1 141,680,000.00 5.53664% 1000.00000000 4.61386462 0.00000000 0.00000000 4-A-2 9,045,000.00 5.53664% 1000.00000000 4.61386512 0.00000000 0.00000000 5-A-1 53,810,000.00 4.93817% 1000.00000000 4.11513826 0.00000000 0.00000000 6-A-1 233,965,000.00 5.26615% 1000.00000000 4.38845584 0.00000000 0.00000000 C-B-1 18,910,000.00 5.27741% 1000.00000000 4.39784241 0.00000000 0.00000000 C-B-2 8,920,000.00 5.27741% 1000.00000000 4.39784305 0.00000000 0.00000000 C-B-3 3,570,000.00 5.27741% 1000.00000000 4.39784314 0.00000000 0.00000000 C-B-4 1,425,000.00 5.27741% 1000.00000000 4.39784561 0.00000000 0.00000000 C-B-5 1,425,000.00 5.27741% 1000.00000000 4.39784561 0.00000000 0.00000000 C-B-6 2,850,000.00 5.27741% 1000.00000000 4.39784211 0.00000000 0.00000000 C-B-7 3,565,000.00 5.27741% 1000.00000000 4.39784292 0.00000000 0.00000000 C-B-8 2,152,391.00 5.27741% 1000.00000000 4.39784407 0.00000000 0.00000000 7-A-1-1 86,040,000.00 3.58000% 1000.00000000 2.48611111 0.00000000 0.00000000 7-A-1-2 9,560,000.00 3.65000% 1000.00000000 2.53472176 0.00000000 0.00000000 7-A-2-1 259,500,000.00 3.58000% 1000.00000000 2.48611110 0.00000000 0.00000000 7-A-2-2 28,860,000.00 3.65000% 1000.00000000 2.53472211 0.00000000 0.00000000 7-M-1 15,670,000.00 3.83000% 1000.00000000 2.65972240 0.00000000 0.00000000 7-M-2 9,610,000.00 4.10000% 1000.00000000 2.84722268 0.00000000 0.00000000 7-M-3 5,010,000.00 4.58000% 1000.00000000 3.18055489 0.00000000 0.00000000 7-M-4 3,554,000.00 5.53000% 1000.00000000 3.84027856 0.00000000 0.00000000 7-X 621.01 0.00000% 672782436.69184100 0.00000000 0.00000000 0.00000000 P 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 (5) Per $1 denomination.

onInterest ~~behalf~~Distribution ofFactors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance 1-A-1 0.00000000 0.00000000 4.15106557 0.00000000 987.41538045 1-A-2 0.00000000 0.00000000 4.15106626 0.00000000 987.41538140 AR 0.00000000 0.00000000 4.20000000 0.00000000 0.00000000 AR-L 0.00000000 0.00000000 4.20000000 0.00000000 0.00000000 2-A-1 0.00000000 0.00000000 4.12501281 0.00000000 952.30728528 2-A-2-1 0.00000000 0.00000000 4.12501295 0.00000000 1000.00000000 2-A-2-2 0.00000000 0.00000000 4.12501205 0.00000000 1000.00000000 2-A-X 0.00000000 0.00000000 0.22700003 0.00000000 963.28028164 3-A-1 0.00000000 0.00000000 4.41050315 0.00000000 999.71131186 3-A-2 0.00000000 0.00000000 4.41050269 0.00000000 999.71131059 4-A-1 0.00000000 0.00000000 4.61386470 0.00000000 981.46233816 4-A-2 0.00000000 0.00000000 4.61386512 0.00000000 981.46233831 5-A-1 0.00000000 0.00000000 4.11513845 0.00000000 979.21399145 6-A-1 0.00000000 0.00000000 4.38845588 0.00000000 980.81267313 C-B-1 0.00000000 0.00000000 4.39784294 0.00000000 999.84804865 C-B-2 0.00000000 0.00000000 4.39784305 0.00000000 999.84804821 C-B-3 0.00000000 0.00000000 4.39784314 0.00000000 999.84804762 C-B-4 0.00000000 0.00000000 4.39784561 0.00000000 999.84804912 C-B-5 0.00000000 0.00000000 4.39784561 0.00000000 999.84804912 C-B-6 0.00000000 0.00000000 4.39784211 0.00000000 999.84804912 C-B-7 0.00000000 0.00000000 4.39784292 0.00000000 999.84804769 C-B-8 0.00000000 0.00000000 4.39784407 0.00000000 999.84788080 7-A-1-1 0.00000000 0.00000000 2.48611111 0.00000000 947.71785588 7-A-1-2 0.00000000 0.00000000 2.53472176 0.00000000 947.71785565 7-A-2-1 0.00000000 0.00000000 2.48611110 0.00000000 961.95534254 7-A-2-2 0.00000000 0.00000000 2.53472211 0.00000000 961.95534269 7-M-1 0.00000000 0.00000000 2.65972240 0.00000000 1000.00000000 7-M-2 0.00000000 0.00000000 2.84722268 0.00000000 1000.00000000 7-M-3 0.00000000 0.00000000 3.18055489 0.00000000 1000.00000000 7-M-4 0.00000000 0.00000000 3.84027856 0.00000000 1000.00000000 7-X 0.00000000 0.00000000 0.00000000 0.00000000 648756793.77143700 P 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (6) Amount Does Not Include Excess Special Hazard, Bankruptcy,or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~CSFB~~CERTIFICATEHOLDER ~~Adjustable~~ACCOUNT ~~Rate~~STATEMENT ~~Mortgage~~CERTIFICATE ~~Trust~~ACCOUNT ~~2005-7~~Beginning Balance 0.00 Deposits Payments of Interest and Principal 34,850,237.51 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 0.00 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 35,050.82 Total Deposits 34,885,288.33 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 305,541.83 Payment of Interest and Principal 34,579,746.50 Total Withdrawals (Pool Distribution Amount) 34,885,288.33 Ending Balance 0.00

~~(Exact~~PREPAYMENT/CURTAILMENT ~~name~~INTEREST ofSHORTFALL ~~registrant~~Total asPrepayment/Curtailment ~~specified~~Interest inShortfall ~~its~~0.00 ~~charter)~~Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00

Delaware		333-120966-18		13-3320910
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

Eleven Madison Avenue, New York, NY		10010
(Address of principal executive office)		(Zip Code)

~~Registrant's~~LOAN ~~telephone~~STATUS ~~number,~~STRATIFICATION/CREDIT ~~including~~ENHANCEMENT ~~area~~STATEMENT ~~code (212)~~DELINQUENT ~~325~~BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-~~2000~~29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000%

Delinquency Status By Groups

N/A (Former name or address, if changed since last report)

~~Check~~OTHER ~~the~~INFORMATION ~~appropriate~~Current ~~box~~Period ~~below~~Class ifA ~~the~~Insufficient ~~Form~~Funds ~~8-K~~0.00 ~~filing~~Principal isBalance ~~intended to simultaneously satisfy the filing obligation~~ of ~~the~~Contaminated ~~registrant~~Properties ~~under~~0.00 ~~any~~Periodic ofAdvance ~~the following provisions (see General Instruction A~~0.~~2. below):~~00

oCREDIT ~~Written~~ENHANCEMENT ~~communication~~Original ~~pursuant~~$ toOriginal ~~Rule~~% ~~425~~Current ~~under~~$ ~~the~~Current ~~Securities~~% ~~Act~~Bankruptcy ~~(17~~275,971.00 ~~CFR~~0.02439050% ~~230~~275,971.~~425)~~00 0.02503895% Fraud 14,273,290.00 1.26148296% 14,273,290.00 1.29502107% Special Hazard 7,136,645.00 0.63074148% 7,136,645.00 0.64751054% Limit of Subordinate's Exposure to Certain Types of Losses

REO Detail - All Mortgage Loans in REO during Current Period

oSummary ~~Soliciting~~12 ~~material~~Month ~~pursuant~~REO toHistory* ~~Rule~~New ~~14a~~REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr 1 - Jumbo 3/1 12 ~~under~~Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the ~~Exchange~~above ~~Act~~table ~~(17~~is ~~CFR~~presented ~~240~~graphically on the monthly bond remittance report.~~14a~~ The monthly bond remittance report can be viewed online at www.ctslink.com. Gr 2 - Jumbo 5/1 12) Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Group 3 - 7/1 12 Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Group 4 - 10/1 12 Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr5-Conforming 3/1 12 Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr6-Conforming 5/1 12 Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr7A-Cnf Mx Hybrid 12 Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr7B-NonCnf Mx Hyb 12 Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com.

oREO ~~Pre~~Loan Detail -~~commencement~~ ~~communications~~All ~~pursuant~~Mortgage toLoans ~~Rule~~in ~~14d-2(b)~~REO ~~under~~during ~~the~~Current ~~Exchange~~Period ~~Act~~Month ~~(17~~Loan ~~CFR~~First ~~240~~Original Loan Entered Payment LTV at Principal Group Number REO Date State Origination Balance No REO loans this period.~~14d-2(b))~~

oREO ~~Pre~~Loan Detail -~~commencement~~ ~~communications~~All ~~pursuant~~Mortgage toLoans ~~Rule~~in ~~13e-4~~REO during Current Period (ccontinued) ~~under~~Current ~~the~~Paid ~~Exchange~~Current ~~Act~~Approximate ~~(17~~Loan ~~CFR~~Principal ~~240~~To Months Loan Delinquent Group Number Balance Date Delinquent Rate Interest No REO loans this period.~~13e-4(c))~~

Foreclosure Detail - All Mortgage Loans in Foreclosure during Current Period

~~Information~~Summary to12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be ~~Included~~viewed online at www.ctslink.com. Gr 1 - Jumbo 3/1 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the ~~Report~~above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr 2 - Jumbo 5/1 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Group 3 - 7/1 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Group 4 - 10/1 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr5-Conforming 3/1 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr6-Conforming 5/1 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr7A-Cnf Mx Hybrid 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com. Gr7B-NonCnf Mx Hyb 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.000% Original Principal Balance 0.00 Sep-04 0.000% Current Principal Balance 0.00 Oct-04 0.000% Nov-04 0.000% Current Foreclosure Total Dec-04 0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com.

~~Section~~Foreclosure 8Loan –Detail ~~Other~~- ~~Events~~All Mortgage Loans in Foreclosure during Current Period Month Loan First Original Loan Entered Payment LTV at Principal Group Number FC Date State Origination Balance No Foreclosure loans this period.

~~ITEM~~Foreclosure ~~8.01.~~Loan ~~Other~~Detail ~~Events~~- All Mortgage Loans in Foreclosure during Current Period (continued) Current Paid Current Approximate Loan Principal To Months Loan Delinquent Group Number Balance Date Delinquent Rate Interest No Foreclosure loans this period.

OnCOLLATERAL ~~June~~STATEMENT ~~30,~~Collateral ~~2005,~~Description ~~Credit~~Mixed ~~Suisse~~ARM ~~First~~Weighted ~~Boston~~Average ~~Mortgage~~Gross ~~Securities~~Coupon ~~Corp~~5.887783% ~~caused~~Weighted ~~the~~Average ~~issuance~~Net ~~and~~Coupon ~~sale~~5.564757% ofWeighted ~~the~~Average ~~Adjustable~~Pass-Through Rate ~~Mortgage-Backed~~5.563735% ~~Pass-Through~~Weighted ~~Certificates,~~Average ~~Series~~Maturity(Stepdown ~~2005-7~~Calculation) 1 Beginning Scheduled Collateral Loan Count 4,002 ~~pursuant~~Number toOf aLoans ~~Pooling~~Paid ~~and~~In ~~Servicing~~Full ~~Agreement~~90 ~~dated~~Ending asScheduled ofCollateral ~~June~~Loan 1,Count ~~2005~~3,912 ~~among~~Beginning ~~Credit~~Scheduled ~~Suisse~~Collateral ~~First~~Balance ~~Boston~~1,131,469,111.65 ~~Mortgage~~Ending ~~Securities~~Scheduled ~~Corp.,~~Collateral asBalance ~~depositor~~1,102,166,622.57 ~~DLJ~~Ending ~~Mortgage~~Actual ~~Capital,~~Collateral ~~Inc.,~~Balance asat ~~seller~~30-Jun-2005 1,102,313,472.42 ~~Wells~~Monthly ~~Fargo~~P&I ~~Bank~~Constant 5,756,272.51 NSpecial Servicing Fee 0.~~A.,~~00 asPrepayment ~~trust~~Penalties ~~administrator~~35,050.82 ~~master~~Realized ~~servicer,~~Loss aAmount ~~servicer~~0.00 ~~and~~Cumulative ~~back-up~~Realized ~~servicer,~~Loss U0.~~S. Bank~~00 ~~National~~Scheduled ~~Association~~Principal 204,735.11 asUnscheduled ~~trustee~~Principal 29,097,753.97 ~~and~~Extra ~~the~~principal ~~other~~distribution ~~servicers~~Amount ~~that~~1,048,565.89 ~~are~~Excess ~~signatories~~Cash ~~thereto~~Amount 1,048,565.89

~~Section~~Miscellaneous 9Reporting –Grp ~~Financial~~7A ~~Statements~~Net ~~and~~Funds ~~Exhibits~~Cap 6.04 Grp 7B Net Funds Cap 6.06 Excess Cash Amount 1,048,565.89 Extra Principal Distribution 1,048,565.89 Overcollateralization Amount 1,049,186.90 Overcollateralization Deficiency 1,666,543.14 Overcollateralization Increase 1,048,565.89 Overcollateralization Reduction 0.00 3 Month Rolling Delinquency Percentage 0.000000% Targeted Overcollateralization 2,715,730.04 Step Down Date Reach NO Trigger Event -3 mo Delinq Rate > 5.25% NO

~~ITEM~~Group 9Level Collateral Statement Group Gr 1 - Jumbo 3/1 Gr 2 - Jumbo 5/1 Group 3 - 7/1 Collateral Description Mixed ARM Mixed ARM Mixed ARM Weighted Average Coupon Rate 5.01356278 5.590692 5.630611 Weighted Average Net Rate 4.981278 5.222415 5.292604 Weighted Average Maturity (c1) (1) (1) Beginning Loan Count 75 296 154 Loans Paid In Full 1 10 0 Ending Loan Count 74 286 154 Beginning Scheduled Balance 38,215,081.37 ~~Exhibits~~159,590,679.60 49,374,950.94 Ending Scheduled Balance 37,762,461.33 154,080,864.93 49,360,808.15 Record Date 06/30/2005 06/30/2005 06/30/2005 Principal And Interest Constant 178,164.18 765,286.77 244,078.48 Scheduled Principal 7,588.67 21,768.16 12,402.54 Unscheduled Principal 445,031.37 5,488,046.51 1,740.25 Scheduled Interest 170,575.51 743,518.61 231,675.94 Servicing Fees 11,942.22 48,977.93 13,907.56 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee 0.00 0.00 0.00 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 0.00 0.00 0.00 Pool Insurance Fee 0.00 0.00 0.00 Spread 1 0.00 0.00 0.00 Spread 2 0.00 0.00 0.00 Spread 3 0.00 0.00 0.00 Net Interest 158,633.29 694,540.68 217,768.38 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 4.981278 5.222415 5.292604

(c)	Exhibits (executed copies): The following execution copies of Exhibits to the Form S-3 Registration Statement of the Registrant are hereby filed:
	10.1	Pooling and Servicing Agreement dated as of June 1, 2005, among Credit Suisse First Boston Mortgage Securities Corp., as depositor, DLJ Mortgage Capital, Inc., as seller, Wells Fargo Bank, N.A., as trust administrator, master servicer, a servicer and back-up servicer, U.S. Bank National Association, as trustee, and the other servicers that are signatories thereto.

10Group Level Collateral Statement Group Gr7A-Cnf Mx Hybrid Gr7B-NonCnf Mx Hyb Total Collateral Description Mixed ARM Mixed ARM Mixed ARM Weighted Average Coupon Rate 6.2318437 ~~Assignment~~6.330728 ~~and~~5.887783 ~~Assumption~~Weighted ~~Agreement~~Average Net Rate 6.048940 6.056416 5.564757 Weighted Average Maturity (1.00) (1.00) 1.00 Record Date 06/30/2005 06/30/2005 06/30/2005 Principal And Interest Constant 572,396.01 ~~dated~~1,727,009.11 as5,756,272.51 ofBeginning ~~June~~Loan Count 517 1,091 ~~2005~~4,002 byLoans ~~and~~Paid ~~between~~In ~~DLJ~~Full ~~Mortgage~~20 ~~Capital~~29 90 Ending Loan Count 497 1,062 ~~Inc~~3,912 Beginning Scheduled Balance 104,063,347.18 ~~and~~313,741,273.83 ~~Credit~~1,131,469,111.65 ~~Suisse~~Ending ~~First~~Scheduled ~~Boston~~Balance ~~Mortgage~~99,393,372.72 ~~Securities~~303,491,083.78 ~~Corp~~1,102,166,622.57 Scheduled Principal 24,464.60 71,833.44 204,735.11 Unscheduled Principal 4,645,509.86 10,178,356.61 29,097,753.97 Scheduled Interest 547,931.41 1,655,175.67 5,551,537.40 Servicing Fee 23,370.62 71,719.19 304,578.49 Master Servicing Fee 0.00 0.00 0.00 Trustee Fee 0.00 0.00 0.00 Fry Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 402.41 202.48 963.34 Pool Insurance Fee 0.00 0.00 0.00 Spread 1 0.00 0.00 0.00 Spread 2 0.00 0.00 0.00 Spread 3 0.00 0.00 0.00 Net Interest 524,158.38 1,583,254.00 5,245,995.57 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 6.044299 6.055642 5.563735

~~SIGNATURES~~Miscellaneous Reporting Group Gr 1 - Jumbo 3/1 Insurance Proceeds 0.00 Substitution Adjustment Amount 0.00 Substitution Adjustment Amount 0.00 Group Gr 2 - Jumbo 5/1 Insurance Proceeds 0.00 Group Group 3 - 7/1 Insurance Proceeds 0.00 Substitution Adjustment Amount 0.00

~~Pursuant~~Miscellaneous toReporting ~~the~~Group ~~requirements~~Group of4 ~~the~~- ~~Securities~~10/1 ~~Exchange~~Insurance ~~Act~~Proceeds of0.00 ~~1934,~~Substitution asAdjustment ~~amended,~~Amount ~~the~~0.00 ~~registrant~~Group ~~has~~Gr5-Conforming ~~duly~~3/1 ~~caused~~Insurance ~~this~~Proceeds ~~report~~0.00 toSubstitution beAdjustment ~~signed~~Amount on0.00 ~~its~~Group ~~behalf~~Gr6-Conforming by5/1 ~~the~~Insurance ~~undersigned~~Proceeds ~~hereunto~~0.00 ~~duly~~Substitution ~~authorized~~Adjustment Amount 0.00

~~Dated: July~~Miscellaneous ~~14,~~Reporting ~~2005~~Group Gr7A-Cnf Mx Hybrid Insurance Proceeds 0.00 Substitution Adjustment Amount 0.00 Group Gr7B-NonCnf Mx Hyb Insurance Proceeds 0.00 Substitution Adjustment Amount 0.00

Group

~~CREDIT~~Prepayment ~~SUISSE~~Detail ~~FIRST~~- ~~BOSTON~~Prepayments ~~MORTGAGE~~during ~~SECURITIES~~Current ~~CORP~~Period Summary Loans Paid In Full Repurchased Loans Original Current Original Current Principal Principal Principal Principal Group Count Balance Balance Count Balance Balance Gr 1 - Jumbo 3/1 1 1,000,000.00 ~~By:~~447,805.85 0 0.00 0.00 Gr 2 - Jumbo 5/s1 10 5,045,400.00 4,976,276.37 0 0.00 0.00 Group 3 - 7/1 ~~Kevin~~0 ~~Steele~~0.00 ~~Name:~~0.00 ~~Kevin~~0 ~~Steele~~0.00 ~~Title:~~0.00 ~~Vice~~Group ~~President~~4 - 10/1 4 2,255,000.00 2,255,000.00 0 0.00 0.00 Gr5-Conforming 3/1 4 1,109,584.00 1,108,878.38 0 0.00 0.00 Gr6-Conforming 5/1 22 4,411,426.40 4,408,463.09 0 0.00 0.00 Gr7A-Cnf Mx Hybrid 20 4,593,160.00 4,591,010.68 0 0.00 0.00 Gr7B-NonCnf Mx Hyb 29 10,213,400.00 10,163,532.01 0 0.00 0.00 Total 90 28,627,970.40 27,950,966.38 0 0.00 0.00

~~Exhibit~~Prepayment ~~Index~~Detail - Prepayments during Current Period (continued) Summary Substitution Loans Liquidated Loans Curtailments Original Current Original Current Principal Principal Principal Principal Curtailment Group Count Balance Balance Count Balance Balance Amount Gr 1 - Jumbo 3/1 0 0.00 0.00 0 0.00 0.00 850.98 Gr 2 - Jumbo 5/1 0 0.00 0.00 0 0.00 0.00 513,162.75 Group 3 - 7/1 0 0.00 0.00 0 0.00 0.00 1,740.25 Group 4 - 10/1 0 0.00 0.00 0 0.00 0.00 514,252.87 Gr5-Conforming 3/1 0 0.00 0.00 0 0.00 0.00 3,973.85 Gr6-Conforming 5/1 0 0.00 0.00 0 0.00 0.00 49,250.16 Gr7A-Cnf Mx Hybrid 0 0.00 0.00 0 0.00 0.00 55,627.71 Gr7B-NonCnf Mx Hyb 0 0.00 0.00 0 0.00 0.00 21,343.37 Total 0 0.00 0.00 0 0.00 0.00 1,160,201.94

Exhibit Number	Description
10.1	Pooling and Servicing Agreement dated as of June 1, 2005, among Credit Suisse First Boston Mortgage Securities Corp., as depositor, DLJ Mortgage Capital, Inc., as seller, Wells Fargo Bank, N.A., as trust administrator, master servicer, a servicer and back-up servicer, U.S. Bank National Association, as trustee, and the other servicers that are signatories thereto.
10.2	Assignment and Assumption Agreement, dated as of June 1, 2005, by and between DLJ Mortgage Capital, Inc. and Credit Suisse First Boston Mortgage Securities Corp.

Prepayment - Voluntary Prepayments

Realized Loss Report - Collateral Summary

Filing Compare · CSFB Adjustable Rate Mortgage Trust 2005-7