Well, it won't ever pull 2000 watts unless it needs to. And I doubt anybody like you and I will make that happen. I do imagine your circuit board in your house would trip if you did though.
I'm gonna get one of these when I get enough money for my Octocore, 10tb RAID array, 8gb of ram and 4 8800GTX vid cards and 4 optical drives (blu-ray, hd dvd and 2 dvd drives) on my 102" monitor by samsung lol Then I'll be king!!! Until of course I get the power bill