I have an ATI radeon 9000IGP in my laptop, and it works decently with GSDX9. It doesn't do anything amazing, but I was able to get about 15-20fps on FFX, so an ati 9100 and 9200 should at least be able to work as well I'd imagine... I used Pixel Shader 1.4 also, and didn't see much difference between that and software mode in terms of speed.
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Desktop:| Dell Inspiron 531 | Windows Vista Basic | AMD Athlon X2 6000+ 3.1GHz | 3GB DDR2 667Mhz Ram | EVGA 8800GTS 512MB | 2x 250GB, 1x 750GB Harddrives |
Laptop: | Dell Inspiron 1525 | Windows Vista Basic | Celeron 550 2.0Ghz | 2GB DDR2 667Mhz Ram | Intel x3100 | 120GB Harddrive |