Q6600 & QuadGT - Help Get Stable @ 3.4GHz

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Joined
20 Dec 2007
Posts
67
Hi Folks,

I finally managed to get my system booting into Windows at 3.4GHz, but its not stable. The main equipment I have is:

Aibit QuadGT IX38
Intel Core 2 Quad Q6600 G0 SLACR
2x1GB Corsair TwinX XMS2, DDR2 PC2-6400 (800), CAS 4-4-4-12
Coolermaster Real Power M700

I also have 2 x PowerColor 3870X2's, a Creative X-Fi Fatl1ty, 2 x LiteOn DVD-RW's and 2 x 500 GB Western Digital WD5000AAKS.

The system is cooled by 2 x Sharkoon 2000 120mm "Golf Ball", I have a Thermalright Ultra-120 eXtreme on the CPU with another Sharkoon 2000 on it. I also have a Corsair Dominator Airflow Fan, but I have taken that out of the system at the moment as the temperatures are quite low.

My CPU timings are:

External Clock: 378MHz
Multiplier Factor: x9
Estimated New CPU Clock: 3402MHz
DRAM Speed (CPU : DRAM): 1:1.00 (DDR2-756)
PCI Express Clock: 100MHz

My voltages are:

CPU Core Voltage VID: 1.4875V
CPU Core Voltage Offset: 0.0100V
Target CPU Core Voltage: 1.4975V
DDR2 Voltage: 2.125V
CPU VTT Voltage: 1.37V
MCH 1.25V Voltage: 1.34V
ICH 1.05V Voltage: 1.10V
ICHIO 1.5V Voltage: 1.53V
DDR2 Reference Voltage: Default
CPU GTLREF 0&2: 67%
CPU GTLREF 1&3: 67%

My RAM timings are all on "By SPD", mainly because I am not sure what settings to use :)

DRAM Timing Selectable: By SPD
CAS Latency Time (tCL): Auto
RAS# to CAS# Delay(tRCD): Auto
RAS# Precharge (tRP): Auto
Precharge Delay (tRAS): Auto
Refresh Cycle Time (tRFC): Auto
Write Recovery Time (tWR): Auto
Write to Read Delay (tWTR): Auto
Act to Act Time (tRRD): Auto
Read to Precharge (tRTP): Auto
Command Rate: Auto

CPU Features:

Thermal Control: Enabled
Limit CPUID MaxVal: Disabled
C1E Function: Disabled
Execute Disable Bit: Enabled
Virtualization Technology: Enabled
EIST Function: Disabled

All CPU temperatures were hovering between 37-43. Case temperatures were all at 55.

Windows Vista 64Bit Ultimate seems stable when first loading, or opening a web page, but running anything CPU intensive (like the Windows experience index thingy) would cause a BSOD and reboot.

Where can I go from here to get it stable? I would love to get the system stable at 3.4GHz (for a few weeks before I start looking at 3.6GHz :) )

Thanks for reading this post.
 
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