As stated above I have the amd 64 3200 754. I wanted to go to the 939 pin 3500. I"ve read a few reviews,some say huge gain and some say only 5 percent. I have money to upgrade but the highend ati and nvidia cards are overpriced at the momnent I'll wait a couple of months when the dust clears on that one and see what card is superior in real apps.So i thought a mobo cpu combo would be a good upgrade now! So back to my original question is the 939 a viable upgrade from 754. Also i have a Ati radeon 9800 pro which can hold me for anotheer 2 months even with Doom 3 maybe not at preferred 1600 by 1200 with every thing cranked but we'll see. So worth it or not? Thanks