EVGA 512-P3-N871-AR GeForce 9800 GTX(G92) 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail

GPUGeForce 9800 GTX(G92) Core clock675MHz Stream Processors128 MemoryMemory Clock2200MHz (effective) Memory Size512MB Memory Interface256-bit Memory TypeGDDR3

http://www.newegg.com/product/product.aspx?item=N82E16814130339

or

EVGA 640-P2-N829-AR GeForce 8800GTS SSC 640MB 320-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported Video Card - Retail

GPUGeForce 8800GTS Core clock576MHz MemoryMemory Clock1800MHz Memory Size640MB Memory Interface320-bit Memory TypeGDDR3

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130317

I'm finally building a new computer, which was a P4 w/hyperthreading 7800 Geforce blah blah

It's a whole new world now!! There is new types of CPUs and GPUs! Just when I have finished creating my list of what I want, I noticed more gamers seem to have Intel Core 2 Quad 2.4 (http://www.newegg.com/Product/Product.aspx?Item=N82E16819115017)

I had picked out a Intel Core 2 Duo E6850 Conroe 3.0GHz: (http://www.newegg.com/Product/Product.aspx?Item=N82E16819115028)

I guess I was just eye-balling the GHZ, and was thinking that should be what's the highest or matters, but now I don't know since more go for the top one. What do I do? Yes... it's a gaming machine we're looking at