Been playing with my OC over the weekend after adding water cooling, and I’ve hit a wall at 9x390. My temps are 30c (Idle) and 44c (Load). My stats and BIOS settings are as follows:

Rig

Asus P5B Deluxe WiFi
e6600 (L704A947 -- not sure how this batch is at OC'ing)
4 GB Patriot eXtreme Performance PC2-6400 RAM
eVGA 8800 GTS

BIOS

FSB = 390
DRAM Frequency: DDR2-780
PCI-e = 105
PCI Clock = 33.33mhz
Spread Spectrum = Disabled
vMem = 2.15v
vCore = 1.5v
FSB Termination = 1.4v
NB = 1.45v
SB = 1.5
ICH = Auto

Memory timings are 5-5-5-15-5-52-3-11-7-13

It was my goal to hit 3.6-3.8ghz on water. Any suggestions as to how to break past my wall?

Also, are these voltage settings safe for long-term use? Any advice is much appreciated.