Hello,

I'm having issues with using SLI GTX 580 graphics cards with this power supply ST1200-G. Basically when they are under heavy use e.g games, benchmarking, stress testing, my screen goes black and the computer shuts down. The event log says there's been kernel power issues. Using one graphics card works fine as I tested them both. I recently tested them through SLI on furmark and when I lowered the voltage of the cards through MSI afterburner it didn't crash, which leads me to believe that the power supply is the problem.

All graphics card drivers are up to date and I have a surge protector, which never has any problems.

Thanks,

Glenn