Alright heres a thought, can I use the second psu to just power the GPU? And then I can see if there is enough juice to stop restarting? Then if it still restarts its not a power issue?Think either the two psu's can't handle the power draw of the new specs or the gpu might need an rma/swap. Needs swapping of parts to really know, and really good psu since the old gpu seems to work.
Would I need to do anything besides plug the psu into the wall and the GPU?