This is a toss up of a question. I have owned many ATi cards in various PC's I have built. Currently I am runnning 2 7800GT's in SLi. I would say that in my experience that ATi seems to have a little bit nicer image quality. They both have 12 pixel pipelines and basiclly the 7600GS is a turned down 7600GT. They just cut the memory bandwidth of the card down from 22.4GB/s to 12.8GB/s. To answer your bottom line question.....Go with the Ati X1600
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