Im wondering what PSU do i get for my i5 and r9 290.I now i have a PSU calculator and all that but i really don't now how to use it.Plz help me,this is gona be a stictly gaming Pc Parts :GPU-R9 290
HDD-1TB Seagate Barracuda
RAM-DDR3 8GB 1866MHZ
P.S Any sugestion about the build and tips would very be helpful
650w is enough, and I would go with the XFX power supply. But if you want to have even more headroom for whatever reason, you can get the PSU I posted above: http://pcpartpicker.com/part/evga-power-supply-220g2075... it is a top notch power supply. But 750W isn't recommended if you plan to crossfire the r9 290.