GSR05AR6 - Price/Yield - 4A3
Balance	$175,492,000.00	Delay	24
Coupon	4.556	Dated	9/1/2005
Settle	9/30/2005	First Payment	10/25/2005
Prepay	10 CPB	15 CPB	20 CPB	25 CPB	30 CPB	40 CPB	50 CPB
98-10	5.112	5.250	5.447	5.674	5.915	6.443	7.055	Yield
98-10	65	83	106	133	159	219	286	Spread
98-14	5.065	5.191	5.370	5.577	5.795	6.275	6.831	Yield
98-14	60	77	99	123	147	202	264	Spread
98-18	5.019	5.132	5.293	5.479	5.676	6.108	6.608	Yield
98-18	56	71	91	113	135	185	242	Spread
98-22	4.973	5.073	5.217	5.382	5.557	5.941	6.385	Yield
98-22	51	65	83	103	123	169	219	Spread
98-26	4.926	5.015	5.140	5.285	5.438	5.774	6.163	Yield
98-26	46	59	76	94	111	152	197	Spread
98-30	4.880	4.956	5.064	5.188	5.319	5.608	5.942	Yield
98-30	42	53	68	84	100	136	175	Spread
99-02	4.834	4.898	4.988	5.091	5.201	5.443	5.722	Yield
99-02	37	47	60	74	88	119	153	Spread
99-06	4.788	4.839	4.912	4.995	5.083	5.277	5.502	Yield
99-06	33	42	53	65	76	102	131	Spread
99-10	4.742	4.781	4.836	4.899	4.966	5.113	5.282	Yield
99-10	28	36	45	55	64	86	109	Spread
99-14	4.697	4.723	4.760	4.803	4.848	4.948	5.063	Yield
99-14	23	30	38	46	52	70	87	Spread
99-18	4.651	4.665	4.685	4.707	4.731	4.784	4.845	Yield
99-18	19	24	30	36	41	53	65	Spread
99-22	4.605	4.607	4.609	4.612	4.615	4.621	4.628	Yield
99-22	14	18	23	26	29	37	44	Spread
99-26	4.560	4.549	4.534	4.517	4.498	4.458	4.411	Yield
99-26	10	13	15	17	17	20	22	Spread
99-30	4.514	4.491	4.459	4.421	4.382	4.295	4.195	Yield
99-30	5	7	8	7	6	4	0	Spread
100-02	4.469	4.434	4.384	4.327	4.266	4.133	3.979	Yield
100-02	1	1	0	-2	-6	-12	-21	Spread
100-06	4.424	4.377	4.309	4.232	4.150	3.971	3.764	Yield
100-06	-4	-5	-7	-12	-17	-28	-43	Spread
100-10	4.378	4.319	4.235	4.138	4.035	3.809	3.550	Yield
100-10	-8	-10	-15	-21	-29	-44	-64	Spread
WAL	3.06	2.38	1.80	1.40	1.14	0.80	0.60
Principal Window	Oct05 - Jun10	Oct05 - May10	Oct05 - Dec09	Oct05 - Jan09	Oct05 - May08	Oct05 - Aug07	Oct05 - Feb07
CMT_1YR	3.86
0.5yr EDSF	4.163
1YR Libor	4.312
2YR Swap	4.401
3YR Swap	4.461
4YR Swap	4.486

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