I have the subject combo with 4 gig DDR2 800. Runs fine at stock speeds.

I have tried lowering the HTT to 4, lowering the RAM to DDR2 667, increasing
the RAM voltage from default 1.8v to 1.95v.
The best I can get out of FSB is 220 (10% overclock). I've read the default
CPU voltage is 1.20 - 1.25? Any idea where I can set this (limit)?

As I'm used to easy 20% plus overclocks with an X2 3800 and an X2 4200
(90W), I'm a bit disappointed.

There is one other setting that may influence, the PCI-E speed is still set
to auto. Any advice or experience to indicate I should lock this at 100 MHz?

Or, did I blow it by not just getting the 90W version of the 4600+?

TIA!