Noice! Ican see why you call it a sleeper!
I have to say... you need to ditch and replace that PSU IMMEDIATELY . A S A P . WARNING . DANGER WILL ROBINSON!
Seriously, the quality is really bad and could cook/fry your whole system. they have terrible parts, terrible power fluctuations (ripple), and no stability. Its listed in the Tier 5 (Avoid at all costs). The PSU is THE most important part of your build, please - I beg you to go get a new one... check out XFX, or Seasonic... RUN!