My friend ordered 3 of these last week, all 3 are 8+8pin. kinda screwed us on the PSU side.
only came with a single 2x 4pin molex to 8pin adapter per box as well.
I bought one a few weeks ago and was also surprised at the 2 x 8 pin pci-e setup. It's a good card but the cooler is a little louder then I expected. I think the default fan profile may be too aggressive. Voltage control also works in Afterburner but my card proved to be a pretty poor OCer.
Anyway if you have 1 x 8 pin and 1 x 6 pin on your psu you can buy a 6pin to 8pin adapter and likely won't run into an issue.
I have one 8 pin and that's it. EA650 so it should handle the power if the molex wires don't burn up.
What was your OC results? The 7970 was only 800 MHz at launch and this one is already running 1ghz. What would be an solid OC? Btw is the voltage locked?
That did not last long.
All the miners are snapping them up.