First of all that build was edited by me, changed the motherboard and the logistic PSU asdqwe123 chose in his original build. Anyway I kept the WD Black hdd he chose, making budget for other components a bit lower. However if the WD Black isn't a must, I find it OK to swap the HDD for a Seagate barracuda and get a better motherboard instead ( much better for overclocking and holds more utilities ). Also a case with internal usb3.0 header so that routing usb3.0 cable from the rear panel is not needed anymore:
http://pcpartpicker.com/p/14StT
As for VGA and RAM, they're already the best stuff for their prices at the moment, as far as I can see.
A slight improvement ( getting a HD7870 ) costs ~20$ more :
http://pcpartpicker.com/p/14Swi
vdeckerv :
get a different psu, other than that everything looks good
Can you find me a better PSU for under 40$?