My second 6950 is giving me trouble. Its a 6 month old msi twin frozr II. It was unlocked but has been flashed back to original bios. It has been having inconsistent clocks in games and just fine in bitcoin mining. I also have been getting random colored pixels from time to time. Its been doing this. I was testing with furmark and monitoring with msi afterburner. 1- 800 clock speed. Running inconsistently just above 600 2- 600 clock speed 3- 650 clockspeed 4- 600 again 5- bitcoin mining at 800 Lowering the clocks to 600 works as seen above. I am guessing it has problems in games because they use more of the architecture compared to bitcoin mining. I had the same pixle coler problem when I first tried overvolting when I got the card. I just never overvolted. Lowering the voltage works to stop the pixle color. I hoped flashing back the original bios would solve the problem but it turns out that it is not the case. The only change is my btc mining speed. Rma/warranty is not an option All I am looking for is thoughts and suggestions Also... Would crossfire still provide a performance increase if the second card is down clocked to 600? If all else fails it still mines bitcoin at a pretty good speed Edit: More information is further in the thread. I have been testing this card for close to 6 hours now. The card does work again for sure. I believe its original problem, and continuing problem, is voltage related. It does work. I can now push the voltage up some. It still is a weak card though and shows that every once in awhile and usually right after a restart. If I push to far in an overclock, which I was really trying to push it, I start to smell something and it can not be detected by windows at all. I have done this twice but wont do it again. I already had the card in my mind as dead so no worries. How do I get it to be recognized again? Well I can't get it to. It just sorta eventually comes back. Maybe something, like the voltage controller, has to cool or something. I am really starting to speculate with that. I do smell something though. A kinda metallic smell. Probably led. I do have an open window with a fan, and an air filter going. This is ridiculously interesting that this card has come back. It is equally ironic it has come back practically on April fools day. I am glad it is back, but only with a grain of salt. This card has been getting worse and worse and I thought it was going to die very soon. Maybe it still will.