Asus Striker II Extreme: Corruption/Freezes Troubleshooting Thread

[Ambiguous411]

Required System Specifications
PSU ( Power Supply Unit ) = Zalman ZM1000-HP
CPU = Intel Core 2 Quad Q9300 @ 2.5 GHz
RAM = OCZ DDR3-12800 2x2GB (OCZ3P16004GK)
HDD ( the one where you have your windows installation on ) = Seagate Barracuda 7200.10 SATA 3.0Gb/s 750GB (ST3750640AS)
VGA1 = EVGA 9800 GX2 1GB DDR3
VGA2 ( if you have ) = N/A
VGA3 ( if you have ) = N/A
SPU ( Sound Card ) = ASUS Supreme FX II 8-CH
NorthBridge Cooling = Corsair Nautilus 500 Watercooler
SouthBridge Cooling = Corsair Nautilus 500 Watercooler
CPU Cooling = Stock Heatsink
RAM Cooling = N/A
nFORCE Chipset Drivers Version = 15.23
ForceWare/GeForce Drivers Version = 177.83
Sound Card Drivers Version = 6.0.6000.16386
BIOS version 0801 REQUIRED
0901

BIOS Settings
Extreme Tweaker
CPU Level Up = N/A
Memory Level Up = Auto
AI Overclock Tuner = Manual
CPU Multiplier = 7.5
FSB - Memory Clock Mode = Auto
FSB - Memory Ratio = Auto
FSB (QDR) MHz = 1333
MEM (DDR) MHz = Auto/1333
LDT Frequency = 5x
PCIE Bus Slot 1 & 2 MHz = 100
PCIE Bus Slot 3 MHz = 100
SPP<->MCP Ref Clock, MHz = Auto
SLI-Ready Memory = Disabled

Memory Timing Setting
P1 = Auto
P2 = Auto
tCL ( CAS Latency ) = 7
tRCD = 7
tRP = 7
tRAS = 20
Command Per Clock (CMD) = 1T
tRRD = 4
tRC = 28
tWR = 12
tWTR = 16
tFAW =17
tRD = 9
tRTP = 5
tRFC = 60
tREF = 7.8us

Over Voltage
CPU Voltage = 1.25000
Loadline Calibration = Enabled
CPU PLL Voltage = Auto
CPU VTT Voltage = Auto
Memory Voltage = Auto
NB Core Voltage = Auto
SB Core Voltage = Auto
CPU GTL REF0 Ratio = Auto
CPU GTL REF1 Ratio = Auto
CPU GTL REF2 Ratio = Auto
CPU GTL REF3 Ratio = Auto
NB GTL REF Ratio = Auto
DDR3 CHA1 Ref Volt = Auto
DDR3 CHB1 Ref Volt = Auto
DDR3 CHA2 Ref Volt = Auto
DDR3 CHB2 Ref Volt = Auto

CPU Configuration
CPU Internal Thermal Control = Disabled
Limit CPUID MaxVal = Disabled
Enhanced C1 (C1E) = Disabled
Execute Disable Bit = Enabled
Virtualization Technology = Disabled
Enhanced Intel SpeedStep(tm) Tech. = Disabled
CPU Core 2 = Enabled
CPU Core 3 = Enabled
CPU Core 4 = Enabled

Spread Spectrum Control
CPU Spread Spectrum = Disabled
PCIE Spread Spectrum = Disabled
MCP PCIE Spread Spectrum = Disabled
SATA Spread Spectrum = Disabled
LDT Spread Spectrum = Disabled

Problem Description
I recently build this machine and i had been constantly and randomly freezing, until i found this thread and i changed the settings you marked in red, and now it freezes less constantly, but still randomly. Sometimes it will run like a champ for 10 hours, or even 2 days without a freeze, but then all of a sudden something will set it off and it'll freeze 5 times in 10 minutes, and then run smoothly for hours immediately after. I have had this problem for a little over 3 months now and have fiddled a good amount trying to get lucky, but after your settings helped so significantly, i am hoping you can help me get this machine running like it should, thanks a lot.

Also, i have 2 more sticks of ram that i would like to snap in there, but when i do, it usually freezes during the boot, idk if vista x64 or this board support 8gb or ram, but just thought i'd ask because you seem to be a wizard. Thanks again