I just got my second EVGA 7800 GTX 512 and this new card will not overclock higher than 580 core and 1.75 memory. My other 7800 GTX 512 runs no problem at 620 core and 1.8 memory. The only thing I have noticed is that the new card has a newer bios rev. Do you think that my overclock is fine? Or do you guys think there is a way to get more out of my card. With both cards stock speed in SLI and my Opteron 254's @ 3.0GHz I scored 9262 in 3DMARK06. Thanks for the help.