Something weird is happening to me when I overclock and stability test after voltage adjustment. I have a XFX GTX280 XXX water cooled by my Coolit Boreas. I also have an awesome power supply, the Antec Signature 850. All temps are cool (water cooling). Power supply rails look good and don't really budge (even when stability testing).

I am using Furmark as suggested to test the voltage. After increasing the voltage to 1.30 and then running the Furmark stability test my computer shuts off. It doesn't even visually start the test yet and my computer powers down. It does not do this unless I increase the voltage. I noticed that the voltage regulator jumps to 92amps when starting the test. Is this normal for it to jump to such high amps? I played Crysis just to compare and it jumps to about 50 or 60 tops.

After I reduced the voltage to 1.25, the system doesn't shut off anymore... What do you guys think? Power Supply? Somekind of Voltage protection?