[ScottWhigham]

i haven't been able to find any decent site for desktop parts on google.

Well, I don't know how picky you are or how hard you've looked already but tomshardware.com and anandtech.com are two "standards".

[gtani]

There's a bunch, with different biases. Also:

http://forums.hardwareguys.com/

http://hothardware.com/category.aspx

http://techreport.com

http://hardwaretechreview.com/about-us (not too up to date)