I have just built a new system for a friend who wants me to get the max out of it. So far I have his 2500K @ 4.6GHz, but I am struggling to bypass the 1050MHz CCC limitation/bios for his 7850. Even after removing CCC and enabling unofficial overclocking within the latest Afterburner Beta's I cannot raise the slider above 1050MHz. Card is a reference VTX 7850 which is perfectly stable at 1050core/5800mem, but I know that core can do more. Any tips? oh, and having played with the 7850 for a few hours I think it is a very decent card. When overclocked, it performs pretty close to my old GTX580 within most games. Even BF3 is playable at 1920x1200 on decent'ish settings. The 580 is better, but not by much. edit: RESOLVED - See post #11 onwards for MONSTER 7850 overclocks (upto and beyhond 1275MHz GPU / 6000MHz mem stable). GTX580 & 7950 performance has never been cheaper. BF3 FRAPS test Crossfire tests added 27/5/2012 another edit: NOW 1350MHz Core Stable and benchable @ 1376-1400MHz! The above requires a BIOS flash to unlock 1.3v (Instructions here). You also need very good cooling (I fitted an Accelero Twin Turbo II). Here and here are some benches @ 1376MHz core.