I want to upgrade from my integrated graphics, but....

[Rick74]

Here's the case

http://www.newegg.com/Product/Product.aspx?Item=N82E16811108396

So the Radeon 7750 fits, but a few people had said that

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125468

would perform better for Dolphin... Nvidia is better for Dolphin...

So I'm confused... On paper, the 7750 looks better, but in real world performance if Nvidia is better for Dolphin, then I want to switch

Does it even make a difference with these low end cards?