I picked up one of these power draw meters from Amazon a while ago. I've been using it to measure how much my AM1 NAS/HTPC is sucking up (20W btw). However, last week I started measuring my main rigs power draw in various scenarios. My specs are below by the way, and both the GPU and CPU are overclocked. At idle I draw 80W. During gaming around 250W, and at max load (prime 95 and furmark running at the same time), 320W. I hope that puts into perspective the size of PSU people should be looking at for modern, single card rigs. Everyone likes to talk about 'headroom' but even with a lowly 450W PSU, I've still got 130W of power left in the tank, and that doesn't take into account the fact that most good quality PSUs will actually output a decent amount more than their stated figure. Does anyone else measure their rigs power draw?