Transaction Booster requires higher NB voltages, goto 1.55v on NB and see how she does
Anyways heres what I run atm....
BIOS 0907
Extreme Tweaker
Ai Overclock Tuner : Manual
OC From CPU Level Up : AUTO
CPU Ratio Control : Manual
- Ratio CMOS Setting : 8
FSB Frequency :450
FSB Strap to North Bridge :333mhz
PCI-E Frequency: 115
DRAM Frequency: DDR2-901
DRAM Command Rate : 2T
DRAM Timing Control: Manual
CAS# Latency : 4
RAS# to CAS# Delay : 4
RAS# Precharge : 4
RAS# ActivateTime : 10
RAS# to RAS# Delay : 3
Row Refresh Cycle Time : 30
Write Recovery Time : 3
Read to Precharge Time : 3
Read to Write Delay (S/D) : 7
Write to Read Delay (S) : 3
Write to Read Delay (D) : 5
Read to Read Delay (S) : 4
Read to Read Delay (D) : 6
Write to Write Delay (S) : 4
Write to Write Delay (D) : 6
DRAM Static Read Control: ENABLED
Ai Clock Twister : LIGHT
Transaction Booster : DISABLED (1)
CPU Voltage : 1.43750v
CPU PLL Voltage : 1.5v
North Bridge Voltage : 1.53v
DRAM Voltage : 2.12v
FSB Termination Voltage : 1.4v
South Bridge Voltage : 1.125v
Loadline Calibration : ENABLED
CPU GTL Reference : .63x
North Bridge GTL Reference : .67x
DDR2 Channel A REF Voltage : AUTO
DDR2 Channel B REF Voltage : AUTO
DDR2 Controller REF Voltage : AUTO
SB 1.5V Voltage : AUTO
NB LED Selection : NB Volt
SB LED Selection : SB Volt
CPU LED Selection : CPU Volt
Voltiminder LED : ENABLED
CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled

Granted that is BIOS 0903 - However, 0907 was a very minor update, nothing really to do with performance.