Hi guys!

I've just tested the energy consumption of my PC. Aparently Gentoo consumes a 
quiet a bit more than Windows XP: 213 W compared to 188 W

PowerNow is activated and works on both cores (tested). The same hardware is 
plugged in and works. I'll attach the output of lspci, lsmod and cpuinfo as 
well as my world-file just in case it's related to some software.

Is there anything I've forgotten? Where does my energy go?

A short overview of my hardware:

AMD Athlon64 X2 4200+ EE
Asus M2N32-SLI Deluxe (WLAN should be deactivated)
2048 MB DDR2 Corsair
SoundBlaster Audigy 2 ZS
ATI Radeon 1950 Pro (fglrx)
2 SATA2 HDDs
1 SATA1 DVD-RAM
Floppy
USB mouse, keyboard and printer
TFT screen (connected via DVI)