well I put my 2800 with a 6600 gt and ya it smokes the hell out of my old rig " xp 1900 - fx5200 " so dont get me wrong , i do see a huge performance boost , just cant decide wich is doing most of the work , the new gfx card or the cpu , like would I have seen the same performance boost with just the gfx card . But then again i also upgraded the ram from pc 2700 to pc 3200 , so im sure that helps also .
Athlon 64 2800+ clawhammer 512 kb
MSI k8t neo mobo
MSI 6600 gt
samsung 512 mb pc 3200
WD 80 gig ata100 7200 rpm
Onboard sound / realtek 5.1 based sound
7 year old cheap *** 17\" monitor but looks great , im surprised its still running , its bin through 5 computers so far.