I have 3 choices. The XFX P1-850B-BEFX Pro Black Edition, the XFX XXX Edition, or the Seasonic SS-850AM. (All are 850W, the 1st XFX is full-modular, the 2nd partial and the Seasonic is also full-modular.
I also have the wildcard of the NZXT Hale90, or any other PSU for around £90-£120 ($145-$195) and supplying 750-850W (I'd like some room to grow, my requirement has been calculated at around 450W using my current Radeon HD7850, but I am planning to upgrade my card to an R9 290 when new coolers come out, and the power needed is 650W, and as aforementioned I'd like some headroom for further expansion in future.)
Many Thanks for your help.
I also have the wildcard of the NZXT Hale90, or any other PSU for around £90-£120 ($145-$195) and supplying 750-850W (I'd like some room to grow, my requirement has been calculated at around 450W using my current Radeon HD7850, but I am planning to upgrade my card to an R9 290 when new coolers come out, and the power needed is 650W, and as aforementioned I'd like some headroom for further expansion in future.)
Many Thanks for your help.