Anyone use this?

[TheUnk]

http://extreme.outervision.com/PSUEngine

I'm running the following:
3-10k Raptors (2x36, 1x72)
1-7200 WD Cavisomething
E8500 OC @ 3.8
SoundBlaster Audigy 2 with external panel/box
DVD-Drive
3-120mm fans
HD4870X2

All on a 600Watt PSU. Everything seems ok except my sound sometimes cuts out while playing Crysis, and the soundcard requires a power connection (the floppy size). Made me wonder, so I found taht site and it says I only need 550watts, and that's with all components at 90% load.

Anyways, was just curious on what you all thought on thta calculators accuracy? They didn't have HD4870X2 listed, so I just selected Crossfire for it.

 

[Modelworks]

Get a multimeter and connect it to your pc 5volt supply and do some task like gaming, etc , watch the output , repeat for 12v and 3.3v .
If they are stable you know the problem is not there.