3dmark run on my pc at a %100 stable gaming overclock, I am sure I could get more if I went all out @ 3dmark. My x3350 oced to 3ghz @1.2875v in Bios max temp via RealTemp registering from 35-40c at idle and 50-57c under load depending on the core.
KFA 8800GT oced and under volted, couldn't get this 8800gt's core or memory up much over oem even with upping the voltage so i just left it under volted. The voltage can be altered via a dip switch on this card, I didn't do any voltage modding.

KFA 8800gt
MTLredux