if you ran OCCT and the computer restarted itself while doing that, it means you need more volts. i had the same thing happen to me when i was running OCCT @ 375*8 stock volts. after i upped vcore a notch, ran it again and had a successful run with no restart.
yeah, i've never had a computer restart on me for be unstable while stress testing it's oc. it would just fail the stress test.
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