As an added bonus, you don't need a $400 power supply to run it. Almost any halfway decent 500w PSU should be able to feed a system built around a recent intel cpu and an NVidia 970, although there may be benefits to going with a higher rated PSU like keeping the PSU fans from having to speed up to keep it within specs.
I ran two 970s in SLI right when they were released, and powered them with a 160$ Corsair 850 PSU, in an x79 system with an SSD and 2 spinner drives and a sound card, as well as a lot of USB stuff like CH Hotas, trackIR, and such plugged in. It ran fine IMO - I was going to put in a higher rated PSU, but didn't need to based on all the tests I ran on it, and in no tests/games did the 970s ever "gasp".
I returned them under the whole nVidia 4gb "ramgate" thing, only because I got full price for them and a good deal on the 980s I got in exchange due to the dollar exchange rates changing and the prices of the cards changing as well - but in reality I had NO complaints about the 970s, and had to get a game I never played and force them to experience the issue everyone had been complaining about - it had never affected me.
Great cards still for the $, especially for single 1080p LCDs, which is still the most common option for gamers.
