KalebG 0 Light Poster

I'm building a new computer straight from scratch and have come across something intresting. http://www.newegg.com/Product/Product.asp?Item=N82E16814143049

http://www.newegg.com/product/product.asp?item=N82E16814143070

The first link is a 7600 GT. I was looking at the specs of both and found that the 7600 has a faster core and memory clock than the 7900. I'm not totally sure if this makes a difference or if it makes it worse but wouldnt that be a better buy over the 7900 I have picked out? The on ly advantage I see over the 7600 the 7900 has is the memory interface type. The 7900 has a 256-bit memory interface while the 7600 only has a 128-bit. I would like some input on which to buy and if you can find a better card around that same price range it would be greatly appreciated if you could post its link. Thanks in advance.

P.S. - I should probally say I'm looking for a card cabale of letting me play high powered games and that I cna rely on. Performance output for gaming is important for me sincei mainly game and program on computers.