(08-06-2013, 02:32 PM)Shell32 Wrote: The amperage is 25A on 12V line. I've just seen a new nvidia driver update, i'll try it.
I do recommend you try stress testing your system. Try running furmark and superPI or some other CPU and GPU stressing programs at the same time. They won't damage your system, but it should let you know if there is a problem.
Unfortunately, the only real way to check if a power supply is "Good" or not is to hook up a properly configured multimeter into the 12v or to purchase an expensive professional kit that's designed to test them.