Read this horror story.http://www.tomshardware.com/forum/300926-28-chances-blown-damaging-hardwares
Buy a real psu from Corsair,Antec,XFX,Seasonic etc.
A 550-600W would be fine.
Not the most reassuring story. Thanks. Any other opinions? Funny how I ask if this PSU is ok, and I didn't even notice this ridiculous story 2 posts under mine about the same PSU.