GPU requires 2x8 PIN PCIE, the power supply has a 2x6+2 but it doesnt seem to work (well the +2) PSU has 2 spare 8 - pins slots though is there such a thing as a 8 pin from the PSU that goes straight into another 8 pin GPU
PSU is just under 12 months old, and the box says it supports the "latest high-end GPU 6/8 PIN",
-High end GPU's have decreased in consumption and are not as power hungry as they used to be so i believe the PSU is fine,
-The MOB TPU is on and ASUS utilities has overclocked CPU slightly no dramatic overclocking though, I've tried ever combination for example just running off 2x6 pin but same 1 long beep followed by 3 short beeps and no display...
Advertising claims and performance are 2 different things. There is a reason that PSU manufacturers like Seasonic and Corsair are so highly recommended, they build good stuff and live up to their performance claims.
Your PSU might be okay, but the manufacturer's claims are dubious when you research what others say (who actually use them).
What other video card (GPU) are you using vice the HD7970 to check the BIOS settings?
even though it says PCI-E just below the 8 pin? well i know the card powers up fine lights,fans spin. just no display! and those annoying beeps. no other PC, mines the the only descent one in the house.
There is a separate 8-pin connector that plugs into the motherboard to provide auxiliary power to it. This is a different connector type than used by the 6/6+2/8-pin PCIe connectors. Just pointing out for clarification.
Testing the card, as Sunius points out, does not require a powerful system. Just one with a power supply sufficient to power the GPU.
The other PC in the house is rubbish to damm small + Supply, card just under a foot long ill get on to amazon about possible swap
But again i used these spare 8 pins for direct power to the GPU when i crossfired 6870, that was a 8 pin to 6 pin, i just need a 8 pin to 8 pin i guess.