Try the following settings ( the blue ones are the new changes )

Quote Originally Posted by Ambiguous411 View Post
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 = 6.1
ForceWare/GeForce Drivers Version = 175.19
Sound Card Drivers Version = 6.0.6000.16386
BIOS version 0801 REQUIRED
I AM RUNNING 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 = Unlinked
FSB - Memory Ratio = N/A
FSB (QDR) MHz = 1333
MEM (DDR) MHz = 1066
LDT Frequency = 3x
PCIE Bus Slot 1 & 2 MHz = 100
PCIE Bus Slot 3 MHz = 100
SPP<->MCP Ref Clock, MHz = 200.5MHz
SLI-Ready Memory = Disabled

Memory Timing Setting
P1 = Auto
P2 = Auto
tCL ( CAS Latency ) = 7
tRCD = 7
tRP = 7
tRAS = 24
Command Per Clock (CMD) = 2T
tRRD = 7
tRC = 33
tWR = 12
tWTR = 27
tFAW =33
tRD = 12
tRTP = 7
tRFC = 72
tREF = Auto

Over Voltage
CPU Voltage = 1.25000
Loadline Calibration = Enabled
CPU PLL Voltage = Auto
CPU VTT Voltage = Auto
Memory Voltage = 1.7V
NB Core Voltage = 1.4V
SB Core Voltage = 1.55V
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
Quote Originally Posted by Ambiguous411 View Post
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.
Quote Originally Posted by Ambiguous411 View Post
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
It does support 8GBs of RAM, and Windows Vista x64 supports them as well.
The increased number of DIMMs and the increased capacity however applies more stress to the nFORCE memory controller and thus you need to fiddle with the settings and voltages again ( once you insert the other 2 DIMMs ) and of course will "limit" your overclocks ( not that you're close to the limit now, not at all, just a note ).
Let's try to get this thing fully stable as is, and then we can proceed into making it stable with all 4 DIMMs on.