Is my PSU powerful enough?

[Mike_163]

this is my first self built PC and I am starting to get into overclocking, but I am coming across a problem when trying to do load tests. When I run Prime 95 at my preferred OC setting my system either locks up or the computer reboots spontaneously.

I'm wondering if this is caused by a PSU that inst powerful enough.

I currently have a EVGA supernova 750w (GOLD) and my system only draws 650w at default settings. I am overclocking my FX8350 base clock of 220mhz. could it actually be drawing more than 750w?

MOBO: MSI 990FXA
CPU: FX-8350 4.0ghz 8 core
RAM: 16GB ripsaw X series DDR3
GPU: 2x radeon sapphire nitro R9 380 crossfire

 

[MyNameX]

dont buy 2 r9 380 better buy 1 390 , between 2 and 1 r9 380, as long as you not gonna play at 4k (sometimes even if you do ) you wont see a big change at fps ...

 

[Vic 40]

It seems he alreay has the system so not advice he can do something with.

If the powerdraw is measured at the wall,can you take about 10% off the 650watt since efficiency is still coming into play.A spontanious reboot might be the psu though,It isn't after a blue screen?

Which EVGA Supernova Gold? The Nex/G1 or G2.