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You probably already figured out that the card will need more than the 75 Watts the PCI-Express interface can provide .. correct, you need to hook up this bad boy to your PSU with the help of a 6-pin 12v connector.
Did I mention already that I like the cooling solution ... ?
Under the hood .. all copper. Even the memory is cooled by it.
Alive and ready to take a good Guru3D beating. By the way, PSU wise I recommend 420 Watts for this high-end series with at least 20 amps on the 12 volts rail. If you go Crossfire, 520 Watts at the least with dual-12V rails !