Antec TruePower Series 750W 80+ Gold issue with 7970?

[mikek753]

hi,

somehow this PSU doesn't work for my 7970, the card doesn't "boot" - it doesn't show anything at bios boot and nothing after in Win7
when another PSU in use Thermaltake 750 or SeaSonic 660 no issues at all.
back to Antec and video card just doesn't work, or might start working after 3-5 times of PC reset
I've tried to connect diff combinations for 2 8pins, all the same - no video

Also, the PSU was replaced by RMA and it just doesn't work :\

any ideas?

 

[mikek753]

I tried 6850 card that has 2 6pins and PSU works Ok
but when 7970 that uses 2 8pins it just doesn't work
the PSU has 750W with 4 8pins and suppose to feed enough power to just one video card

any ideas?

 

[VirtualLarry]

Also, the PSU was replaced by RMA and it just doesn't work :\

I think that you answered your own question.

 

[lehtv]

You'll have to give it another RMA, assuming you're sure the card is without fault. Unfortunate, but it happens. Refurbs aren't always 100%

What was the reason for the original RMA?

 

[mikek753]

original Antec PSU had worked for 1st 2 weeks and later it required 2-3 system resets to get video card to work.
However, after boot was good Windows sleep works, so it was kind of solution.
over time it got worse, so RMA
while RMA process Thermaltake has used without any issues.
the Thermaltake has 2 cables for 8pins, and Antec has 4 cables
anyway 30 days window of return was missed - so I try to get working Antec

I assume that 750W is way enough to power just one video card, should it not?