hello to all. please help me to make my system stable, past years my system was freezing randomly no matter what was on, game, movie, music, after I found this settings on Internet I make system more stable than before and was freezing more less than before but from beginning of this month I started playing Assassin Creed 2 and Freezing make me craze again. The system getting freezing when I'm playing around 10 -25 min. I am try time to time some different settings like push some more voltage to NB – SB –CPU but still freezing on games. please if you can help me with it and sorry for my bad English.

my settings are:

Required System Specifications
PSU ( Power Supply Unit ) = Cooler Master RealPower 1000w
CPU = Q9450
RAM = 2X 1GB Corsair Dominator 1800Mhz “CM3X1024 – 1800C7DIN”
HDD ( the one where you have your windows installation on ) = 500GB Maxtor + 150GD WD Raptor
VGA1 = Evga 9800 GX2
VGA2 ( if you have ) = no
VGA3 ( if you have ) = no
SPU ( Sound Card ) = SupremexFX 2 ( Stock)
NorthBridge Cooling = Liquid Cooling from 3D Galaxy (Stock from case GIGABYTE 3D Mercury)
SouthBridge Cooling = 2 Optional Funs From Asus (made for this motherboard)
CPU Cooling = Liquid Cooling from 3D Galaxy (Stock from case GIGABYTE 3D Mercury)
RAM Cooling = Corsair Dominator 3 Fun RAM Cooler.
nFORCE Chipset Drivers Version = 15.53 WHQL
ForceWare/GeForce Drivers Version = 197.45_desktop_win7_winvista_32bit_international_w hql
Sound Card Drivers Version = Unknown
BIOS version 0801 REQUIRED

BIOS Settings
Extreme Tweaker
CPU Level Up = Auto
Memory Level Up = Auto
AI Overclock Tuner = Manual
CPU Multiplier = 7.5
FSB - Memory Clock Mode = Linked
FSB - Memory Ratio =Sync Mode
FSB (QDR) MHz =1333
MEM (DDR) MHz =1333
LDT Frequency =X4
PCIE Bus Slot 1 & 2 MHz = 100
PCIE Bus Slot 3 MHz = 100
SPP<->MCP Ref Clock, MHz = 200.5
SLI-Ready Memory = Disabled

Memory Timing Setting
P1 = Auto
P2 =Auto
tCL ( CAS Latency ) =9
tRCD =9
tRP =9
tRAS =24
Command Per Clock (CMD) =2T
tRRD = Auto 7
tRC = Auto 31
tWR = Auto 10
tWTR = Auto 25
tFAW = Auto 31
tRD = Auto 9
tRTP = Auto 4
tRFC = 72
tREF = Auto 7.8uS

Over Voltage
CPU Voltage =1,3v
Loadline Calibration = Enabled
CPU PLL Voltage =1,54v
CPU VTT Voltage =1,12v
Memory Voltage =1,8v
NB Core Voltage =1,44v
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 = +30mV
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 = Disabled
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
Freezing