Power Supply Calculator

[Kougar]

That's more accurate than most wattage calculators out there, but not at all flawless. Accoring to them, the 5900XT consumes more juice than the 5900..

This is true, from a brief googling I did. The XT looks to be comparable to a 5900Ultra, so it should definitely be way more power hungry.

...and that an E6300 Core 2 Duo consumes almost as much as a 2.8C Northwood...

Oh?? I thought it'd be really funny if this was the case, I'm going to have to find some hard CPU only numbers... But I think this one is either true or pretty close to being true. This Northwood has almost no power saving tech, and speedstep doesn't work on this model because Speedstep back then would only drop the clock rate to 2.8ghz at it's lowest. Factor in that it's a Netburst, that it is a 130nm die size CPU, that the E6300 is two cores fused into one on a 65nm die size with some very advanced power saving features, with half of the 4mb L2 cache disabled then I can believe it is true.