I finished tweaking my Bios so I post my results in this thread too.
That's the Rampage Bios 0308 Settings for a full OOCT stable Q9450 @ 3.8GHz (screenshot in Q9450 O/C Thread):
Q9450 OEM L806B090 - Asus Rampage bios 0308 (CPU & N/B water cooled)
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*Advanced settings:
CPU Ratio: 8.0
C1E: Disabled
CPU TM: Enabled
Vanderpool: Enabled (vmware...)
Execute Disable Bit: Enabled
Max CPUID: Disabled
Speedstep: Disabled
*Extreme Tweaker
FSB Strap to North Bridge: 333MHz
FSB Frequency: 475
PCIE Frequency: 100
DRAM Frequency: DDR2-951MHz
DRAM Command Rate: 2N
DRAM Timing Control: Auto
DRAM Static Read Control: Disabled
Ai Clock Twister: Auto
Ai Transaction Booster: Manual -> Level: Auto
CPU Voltage: 1.35625V (1.34V real)
CPU PLL Voltage: 1.50V
North Bridge Voltage: 1.75V
DRAM Voltage: 2V
FSB Termination Voltage: 1.58V (1.50V real !!! Risky: see next post from mngdew)
South Bridge Voltage: 1.175V
SB 1.5V Voltage: 1.50V
Loadline Calibration: Enabled
CPU GTL: 0.67x
NB GTL: 0.67x
DRAM * REF: Auto
CPU & PCIE Spread Spectrum: Disabled
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