Hello, i need to known what PSU you recommend for this build.
leaves you enough room to sli in the future
PCPartPicker part list / Price breakdown by merchant
I would NOT be buying a 4gb 770 under any circumstances. Either get a 280x or a 290. The problem with 4gb 770s is a) the pricing opens you up to getting a 290 which gives you more vram and b) the narrow bit bus at 256gb becomes a serious hamper vs the 384 bit bus on the280x and the 512 bit bus on the 290.
Going back to the power supply
It is good if you want to SLI and run games at 1440p. I have one because I needed something that could SLI later on for 1440p, and I needed an NVidia card because I play a game (IL-2 ClOD/1946) that often chooses not to run well on AMD hardware. I agree that in most cases, a 280x is more practical though.