Quote Originally Posted by Patch View Post
Black screen reset over 1.44v in Vantage GT2. Vid and/or smartdoctor
1300 mhz does fine at 1.4v. Same issue at -70 to -130.
HCP 1200
OCP mods (overall and phase)
PLL 1.32

Only have a tpq 1200 OC to try, so can't evaluate single rail.
Change your PSU to Antec HCP or Corsair AX1200. Those solved my similar issues. I have been using Thermaltake TP 1200W PSU's few years and this was first monster which triggered the OCP in it.

Your card seems to be good, so fix that and you will see a lot better results.