It's almost that time again, time to upgrade the ole video card, but this time around, I'm running into some difficulties. The newest generation of video cards consume huge amounts of power, and I was recently seduced by shuttle's sexy line of XPC's, which unfortuantely have small power supplies. So does anybody here know of how I can figure my system's total consumption, the consumption of my current card, and that of a new one, to make sure it all comes in under 200 watts?