Wiki tells me it's only 155W - I'm surprised. I was expecting nearer 200W. Then again, assuming between 80% - 85% efficiency at half load for my PSU, my 370W at the wall would be 295W - 315W actual draw. The Q6600 and 8800GTX between them would pull 250W by TDP, so perhaps that's not so surprising...
Then again, a GTS450 has a significantly lower TDP and wrings out almost twice as many ppd. Perhaps I should have upgraded rather than going watercooled SLI, after all...