Did some digging around to find out about the power consumption on these things. Boy do they suck a lot when overclocked. I think my PSU would struggle. I know at stock it would be fine, but would be looking to go at least 850MHz on core if I got one.
Shame really, as the deal on the 480 SE is very good and is tempting. For the price they are great in every department except power draw when overclocked properly. The 3 year warranty is awesome too.
I will guess I will have to wait and see what the 680/780 has to offer next year. Hope there are some good deals when ivy bridge comes out