Just a guess FFX812 is fx 8120 that's 125w cpu.
Hd 5970 is a 300w card
That lc8650 seems to be a dual rail thing.
Go shopping for a 800+w single rail psu.
Hey, okay I'll just try to explain my problem first.
My computer keeps randomly restarting itself, freezing, sometimes it even freezes or goes into bluescreen and a loud "buzzing" sound starts (I need to restart it manualy if this happenes). I honestly have no idea what could be causing it.
What I've done/checked alredy:
-I have checked the temperatures (PC is not overheating)
-updated all the drivers
-reinstalled all the software
-tried using another graphic card
-I tried using friends stronger power supply(750W), had same problems, but the power supply was broken and actually died after some time, so this could still be a problem.
-I've cleaned everything
-checked RAM (its working fine)
-Asus Sabertooth 990FX
-Corsair Venegance 16gb
-Amd ATI Radeon HD 5970
-LC POWER 650W LC8650 V2.2