You should use the Bios to overclock, it's a lot more flexible.
I know this is a lot to read, but read this entire post:
http://www.overclock.net/amd-general...ing-guide.html
If you use the Bios to overclock, you push the bus speed at stock voltages until it is unstable, then raise voltage slightly until it is. Then Raise bus speed until unstable, then vcore voltage. All the way until you can't get it stable at all, then back to last known stable setting. Use OCCT (
http://downloads.guru3d.com/OCCT-%28...load-1880.html) to test your overclock. 20 minutes or so should let you know whether you are stable at those settings as a small test. All the while keep your RAM at stock settings (or as close to without going over) by using the multiplier to minimize memory stability issues. Check your temperatures throughout using HWMonitor (
http://www.cpuid.com/hwmonitor.php). Don't go over 60 at load (running OCCT).
Once you have your "stable" overclock, Prime95 blend test for 24 hours and do Memtest. If you don't get errors, grats on your overclock. If you do, lower Bus speed until you don't.
Edit: This is quick and dirty overclocking. There are a lot more setting you can play with to get a higher overclock, better stability, and better performance (ie the NSB and HTT).
Edited by KittensMewMew - 12/14/09 at 2:00pm