been playing with my Kill-A-Watt and i thought i would start a thread where those who have the means to measure their computer's power usage can report their hardware and watts used in these different states: Off Standby - aka. Sleep or S3 Idle - desktop, minimal apps, no activity Load - 100% CPU, all cores Game/Max - 100% CPU, all cores, plus 3d benchmarking here's the only one i've measured so far... my htpc: Processor: AMD Athlon 64 X2 BE-2400 idle: 1.0GHz @ 1.0v load: 2.3GHz @ 1.2v Chipset: Geforce 7050PV Graphics: onboard Memory: 2 x 1GB PC2-6400 Drives: 320GB 7200RPM HD Power Supply: generic SFF 300w Extras: USB wireless KB/mouse receiver (here list add-in cards, usb devices, etc that use power) Off: 5w Standby: 6w Idle: 41w Load: 77.5w Game/Max: 80w the results really surprised me. for one, 5 watts when completely shut down is an awful lot. i'm curious to see what numbers you guys get here. also, standby is barely 1w more which dissolves any guilt i had with using it. and then the 41w idle reading is lower than i hoped! i was seriously considering getting a BT NAS so i wouldn't feel bad about leaving the comp on to download, but i would barely be saving any electricity (Netgear ReadyNAS Duo is rated at 35w typical). post your results!