Hi. I have a pair of Gigabyte GTX 780s (NV-780OC-3GD Rev2) and I am seeing a very strange problem. When the cards are at 954 MHz in SLI, everything works great. Occasionally, and seemingly randomly, when I launch a game, my SLI appears to have one card at 1006 MHz and the other card at 1019 MHz. When its like this, things run for a few minutes and then I get a sudden power shutdown. It seems almost as if the second card is somehow drawing too much power but that is only a guess. When both cards are at 954 MHz, this does not happen. I have an Antec HCP 1000 watt PSU which should seemingly be large enough to handle dual SLI. I have two questions: 1. Any ideas or thoughts on the sudden power shutdown as described above? 2. Which BIOS could I flash to either remove the factory OC and run at nVidia reference speeds (my first preference) OR limit the OC to 954 MHz? What I am after is a stable SLI rather than pushing the cards to the max... Thanks so much for any help, thoughts or advice!