Insufficient Power Supply?

godsarmy4vr

Reputable
Jul 3, 2014
38
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4,530
I'm using a "775 watt" KDM Power supply with my PC which is a g3258 + reference r9 290, 1 HDD, and 1 Hyper evo.
While gaming my monitor lost signal, but the day before I played the same game for a longer amount of time and it didn't seem to have issues, but when when I ran Furmark and Realbench simultaneously, my PC crashed, does this definitely mean a bad PSU? My computer supposedly only needs around 470W to run, and I figured even a low quality 775w PSU would be able to deliver?
 

Geekwad

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