This is my first A64 setup. I have been stuck on Intel for about 4 years. Here's the components I started with:

A64 - 939 3000+ Winchester
MSI K8N Neo2 Platinum
2x512 OCZ PC3200 Rev2 Platinum
Hercules 9800Pro
Enermax EG465P-VE
CoolerMaster SK8 w/ YS Tech 5000rpm 60mm

Tons of new settings for me in this and took me about 2 days to finally work through the "newness". Well as for right now i'm running 9x280 @ 1.65v w/ 2.5-3-3-9 1t 2.85v and the system runs real nice.

3DMark2001se: 24,849
3DMark2003: 7209
3DMark2005: 2902 (not 9x280)
AquaMark3: 52,780

And still tweaking..... I am attaching some pictures for your viewing pleasure. Keep in mind this CPU Heatsink was $7.