Thanks for the help But I'm going to be doing a lot of editing, photo and video and gaming on the side. So I kinda want a pretty powerful PC so I want to keep the 16GB RAM and the 1000w PSU, thanks for the suggestions though. Your help is much appreciated
There is no way that 1x video cards can even cause a good 1000w to blink. Even a GTX 590 can only maybe touch 700w with a full system under full load. Most GTX 590 system probably won't break 600w under load.
I think you could get by with an 800w pretty easily even with the best 1x video card money can buy.