This is a duplicate post from the q9450 thread, but I think it might actually be more applicable here and since I didn't manage to get too much advice over there, I thought it might be OK if I posted my same question here:

hey guys... been messing around with my q9450 and trying to get it up to 4.0 ghz with no success. I'm sitting at 3.74 now and I'd love to see the big 4.0 past post (that's as far as I've gotten so far). Here's my settings for the 2 speeds that I've been trying:

3.74 (stable-ish):
CPU Ratio: Auto
FSB Freq: 466
PCIE Freq: 100
DRAM Freq: Auto

CPU Voltage: 1.30
CPU GTL voltage: 0.635
CPU GTL voltage: 0.635
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.32
DRAM Voltage: 2.06
NB Voltage: 1.3

Everything else on Auto.

4.02 (post only):
CPU Ratio: Auto
FSB Freq: 500
PCIE Freq: 100
DRAM Freq: Auto

CPU Voltage: 1.33
CPU GTL voltage: 0.635
CPU GTL voltage: 0.635
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.34
DRAM Voltage: 2.06
NB Voltage: 1.34

Everything else on Auto.

any ideas of what else i need to change in order to hit 4.02? I'm using a P5Q-Deluxe (sig), i think its bios 1406.