ASUS P5Q-E (P45) pre-view

[Quad-Damage]

Ai Overclock Tuner ................. [Manual]
CPU Ratio Setting .................. [9.5]
FSB Frequency ...................... [439]
PCIE Frequency ..................... [100]
FSB Strap to North Bridge .......... [Auto]
DRAM Frequency ..................... [PC2-1055] (I have 4 gigs of PC8500) G skills
DRAM Clock Skew on Channel A1 ...... [Auto]
DRAM Clock Skew on Channel A2 ...... [Auto]
DRAM Clock Skew on Channel B1 ...... [Auto]
DRAM Clock Skew on Channel B2 ...... [Auto]
DRAM Timing Control ................ [Manual] (5-5-5-15)
DRAM Static Read Control ........... [Disabled]
DRAM Read Training ................. [Disabled]
MEM. OC Charger .................... [Enabled]
Ai Clock Twister ................... [Moderate]
Ai Transaction Booster ............. [11] or Auto
____________________________________

CPU Voltage ........................ [1.3810]
CPU GTL Voltage Reference (0/2) .... [Auto]
CPU GTL Voltage Reference (1/3) .... [Auto]
CPU PLL Voltage .................... [1.58]
DRAM Voltage ....................... [2.1]
vFSB.....................................[1.22]
NB Voltage ......................... [1.26]
NB GTL Reference ................... [Auto]
SB Voltage ......................... [Auto]
PCIE Voltage ....................... [Auto]
____________________________________

Load-Line Calibration .............. [Disabled]
CPU Spread Spectrum ................ [Disabled]
PCIE Spread Spectrum ............... [Disabled]
CPU Clock Skew ..................... [Auto]
NB Clock Skew ...................... [Auto]
CPU Margin Enhancement ............. [Perfomance Mode]

It's unstable in prime

What should i change?

E8500 @ 4.15ghz
Asus P5Q-E Modded 1201 bios
PC8500 G Skills 4 gigs
1TB/320 Segate Drives
Ati 4850 with S1 @ 690/1130 40 idle
Neo Power 650
Antec Case
Custom Water Cooling Kit
GTZ/D655 Pump at 5/Swiftech Rad 3x E fans and 5x Silent Fans in case

Setup was made to work well and be near silent, it's not loud, but it's not silent