I found my cpu hits a voltage slope around 460 and peaks at 510 @ 1.5v (1.45 real). It's sweet spot is 7x450 @ 1.3v (around 1.24v real).
So i dropped the multi and am running it at 533x6 (3.2Ghz) to peak my ram. It likes it just fine.
I have an old revision and very very limited jumper free settings :(

