Fitch Rates ACE Securities Corp. Home Equity Loan Trust $553.5MM 2005-RM2.

NEW YORK -- ACE Securities Corp. Home Equity Loan Trust $553.5 million mortgage pass-through certificates, series 2005-RM2, which closed on May 26, 2005, are rated by Fitch Ratings as follows:

--$435.2 million classes A-1A, A-1B, A-2A, A-2B, A-2C, A-2D 'AAA';

--$21 million class M1 'AA+';

--$18.7 million class M2 'AA+';

--$11 million class M3 'AA';

--$10.2 million class M4 'AA-';

--$9.6 million class M5 'A+';

--$9.3 million class M6 'A';

--$7.6 million class M7 'A-';

--$5.9 million class M8 'A-';

--$5.4 million class M9 'BBB+';

--$5.1 million class M10 'BBB';

--$5.7 million class M11 'BBB-';

--$8.8 million class B1 'BB'.

The 'AAA' rating on the class A-1A through A-2D certificates reflects the 23.15% total credit enhancement provided by the 3.70% class M1, 3.30% class M2, 1.95% class M3, 1.80% class M4, 1.70% class M5, 1.65% class M6, 1.35% class M7, 1.05% class M8, 0.95% class M9, 0.90% class M10, 1% class M11, 144A 1.55% class B1 and 144A 1.10% non-rated class B2, as well as the 1.15% initial and target overcollateralization (OC). All certificates have the benefit of monthly excess cash flow to absorb losses. The ratings also reflect the quality of the loans, the soundness of the legal and financial structures, and the capabilities of Saxon Mortgage Services, Inc. as servicer and Wells Fargo Bank, N.A. as master servicer. HSBC Bank U.S.A., N.A (rated 'AA' by Fitch) will act as trustee.

On the closing date, the trust fund will consist of two pools of first and second lien, adjustable- and fixed-rate, fully amortizing and balloon, residential mortgage loans with a total principal balance as of the cut-off date of approximately $566,256,939.

The group 1 mortgage pool consists of adjustable-rate and fixed-rate, conforming, first and second lien mortgage loans with a cut-off date pool balance of $336,356,699. Approximately 13.51% of the mortgage loans are fixed-rate mortgage loans and 86.49% are adjustable-rate mortgage loans. The weighted average loan rate is approximately 7.39%. The weighted average remaining term to maturity (WAM) is 346 months. The average principal balance of the loans is approximately $145,044. The weighted average combined loan-to-value ratio (CLTV) is 81.40%. The properties are primarily located in California (45.18%), Illinois (17.87%), and Texas (11.54%).

The group 2 mortgage pool consists of adjustable-rate and fixed-rate, nonconforming, first and second lien mortgage loans with a cut-off date pool balance of $229,900,240. Approximately 13.95% of the mortgage loans are fixed-rate mortgage loans and 86.05% are adjustable-rate mortgage loans. The weighted average loan rate is approximately 7.29%. The WAM is 337 months. The average principal balance of the loans is approximately $205,085. The weighted average CLTV is 82.97%. The properties are primarily located in California (77.73%), Florida (4.99%), and Illinois (4.86%).

Approximately 34.85% of the group 1 mortgage loans and approximately 36.09% of the group 2 mortgage loans are 80 plus LTV loans.

For federal income tax purposes, multiple real estate mortgage investment conduit (REMIC) elections will be made with respect to the trust estate.