Earlier today i had a small overclocking session, my setup was like this:
2GB Corsair DDR2 XMS2 DHX series
XFX GTX260 216SP
And i focused on the CPU, and after a couple of BSOD's and success at lower frequencies i managed to get it to 3.6GHz which i tought was good for this session.
I ran PIfast, superPI and Wprime 32m. The wprime result gave me 1.4points on HWbot which i'm satisfied with, since this not was a super serious overclocking session by my standards ;)