you should get this PSU A.S.A.P. and take back the overclocking until you get this PSU
Corsair 750w (its only $10 more than the corsair 650w)
$120
after rebate $100
http://www.newegg.com/Product/Produc...82E16817139006
your PSU is the absolute bare minimum of what your PC should have I recommend an immediate upgrade and please have a look at the link in my signature
Power Supply Information and Selection