Well the 780's are fine tried them on another system. im a happy man, thought id broke them somehow.
As of now i have removed the new 1250 PSU and replaced it with my cosair HX850, and its running fine so far with my 690(1 hr or so, and considering the other psu was rebooting after 5mins max im pretty sure its the culprit)
Ill leave it some more before im happy enough to do another bios fluash, then ill do that and retry the 780's
Finally another noob question the sli bridge I have with the mobo is only a single width one, the 780s are double pin, do i need a different bridge?
And thanks again all, i really appreciate the help you lot have given so far.
That bridge is fine
