I've been thinking about this for quite some time now, and finally decided to upgrade my system.
Current System:A64 3200+
Abit KV8-Pro Mobo
2x 512mb GeiL Platinum PC3500
BFG 6800 GT OC
Vantec Stealth 470w PSU
36gb WD Raptor HD
160gb Seagate SATA HD
New System:Opteron 148 Venus w/ THERMALRIGHT SI-120
heatsink & 120mm fan
DFI LANPARTY UT nF4 Ultra-D
G.SKILL Extreme Series 2x 1GB PC4000
OCZ PowerStream 520w PSU
eVga GeForce 7800 GT
Same hard drives
The Opterons are overclocking beasts, and im going to push this system as far as I can. I haven't overclocked my current system at all, but I used to be into OC'ing with my past systems... and I'm getting the itch to get back into it.
Best part is the wife said it was ok! I thought it was going to be royal rumble when I brought the issue up.