I found multiplier 10,5 best for my setup. It's now at 10,5 x 265 = 2782 Mhz. As I've got Corsair's 3500LLPRO (DDR438) mem, I use a divider of 13 (which is DDR333 setting on my A8N). For this to work I had to set the CPU voltage to 1,55v.
With multiplier at 11 I was able to get to 220 FSB...
I just clocked my 3500+ Venice at 10,5 x 265 = 2782,5mhz with the stock cooler.
CPU voltage is at 1,55v for it to run stable. Under full load it reaches 52 deg. C
Chipset voltage 1,6v
I guess I got a good one?