PSu is crap and NEEDS to be changed. This is the single most important part of the PC. Change for Antec, XFX, Seasonic, EVGA (G2,B2,GS)
The GPU is far too weak for this build. You are losing performance by wasting money on the motherboard/RAM. you could get a WAY WAY better performing PC for the same price.
This build is terrible price/performance wise and the junk PSU is a danger to the computer.