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Instability with P5Q Pro and Q9550

Last response: in Motherboards
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January 3, 2009 12:19:41 AM

Before the holiday I bought myself some new hardware and set it up, and ever since then I've been trying to achieve stability.

My setup is:
Intel Core 2 Quad Q9550 @ 2.8GHz
Asus P5Q Pro
G.Skill 2x2048MB DDR2 1066MHz F2-8500CL5D-4GBPK
MSI GeForce GTX 260
Antec TPQ-850 850W ATX12V / EPS12V

The problem I am encountering is:
Sporadic blue screens / hardlocks while in Windows Vista (x64). It rarely points to a specific device driver, and is usually generic errors. It happens when I'm playing WoW or casually browsing the Internet, but rarely any other times (and I play other games).

What I have done to investigate/remedy this problem:
1. Memtest86 on each memory stick individually, and then both together, for 8 hours each run; 0 errors.
2. Prime95 blended test for 12 hours. One worker/core encountered an error after 9 hours, but the rest were error-free.
3. Installed only the latest device drivers for all of my hardware, from the manufacturers' websites. I've also ran sfc /scannow to verify my core Windows system files.
4. Ensured normal temperatures were fine. CPU is at 26 Celsius idle, and around 40 at full load.


I am currently using BIOS 1613. I am wondering on whether a setting I have in the BIOS is the culprit. If you have any suggestions on what I should change, or what your successful settings are, please tell me. I am not wanting to or trying to overclock.

Ai Overclock Tuner Manual
CPU Ratio Setting 08.5
FSB Frequency 333
PCIE Frequency 333
FSB Strap to North Bridge 333
DRAM Frequency DDR2-1066MHz
DRAM Timing Control Auto (5-5-5-15)
DRAM Static Read Control Disabled
DRAM Read Training Disabled
MEM. OC Charger Disabled
Ai Clock Twister Light
Ai Transaction Booster Auto
CPU Voltage Auto
VPU GTL Reference Auto
CPU PLL Voltage Auto
FSB Termination Voltage Auto
DRAM Voltage 2.10 (the memory spec is for 2.0 to 2.10, I've read suggestions to use 2.1)
NB Voltage Auto
SB Voltage Auto
PCIE SATA Voltage Auto
Load-Line Calibration Auto
CPU Spread Spectrum Auto
PCIE Spread Spectrum Auto
CPU Clock Skew Auto
NB Clock Skew Auto
CPU Margin Enhancement Optimized
C1E Support Disabled
Virtualization Enabled
Intel CPU TM Function Disabled
Execute Disable Bit Enabled
Memory Remap Feature Enabled (in order to use 4GB)
Memory Hole Disabled
ACPI 2.0 Support Enabled
ACPI APIC support Enabled

I have tried disabling both CPU and PCIE Spread Spectrum, as well as having the DRAM Static Read Control, Read Training, and OC Charger options Enabled. The above is what I've had the most luck with, albeit still unstable.

Thanks,
Erik









Ai Overclock Tuner Manual
CPU Ratio Setting 08.5
FSB Frequency 333
PCIE Frequency 333
FSB Strap to North Bridge 333
DRAM Frequency DDR2-1066MHz
DRAM Timing Control Auto (5-5-5-15)
DRAM Static Read Control Disabled
DRAM Read Training Disabled
MEM. OC Charger Disabled
Ai Clock Twister Light
Ai Transaction Booster Auto
CPU Voltage Auto
VPU GTL Reference Auto
CPU PLL Voltage Auto
FSB Termination Voltage Auto
DRAM Voltage 2.10
NB Voltage Auto
SB Voltage Auto
PCIE SATA Voltage Auto
Load-Line Calibration Auto
CPU Spread Spectrum Auto
PCIE Spread Spectrum Auto
CPU Clock Skew Auto
NB Clock Skew Auto
CPU Margin Enhancement Optimized
C1E Support Disabled
Virtualization Enabled
Intel CPU TM Function Disabled
Execute Disable Bit Enabled
Memory Remap Feature Enabled (in order to use 4GB)
Memory Hole Disabled
ACPI 2.0 Support Enabled
ACPI APIC support Enabled
January 3, 2009 7:08:42 PM

please use SpeedFan 4.37 to monitor your voltages. Are 12V 12V? Etc.
January 5, 2009 8:50:10 PM

My 12V is at 11.51V

How can I rectify this? I'm using a new 850W PSU
Related resources
April 28, 2009 2:41:30 PM

Uninstall/remove EPU-6 engine from start up... I found it caused all my instabilities!!!

Cheers,

Stan
April 28, 2009 6:59:49 PM

smeggysmeg,

Since you do not want to overclock. I think you should put everything in the bios to default and see how the system runs.
Anonymous
a b V Motherboard
December 3, 2009 5:52:34 PM

I have a similar system: a standard P5Q with a Q9550. I also encountered BSOD's and system resets - again, with no consistent cause - after adding two additional memory modules. I *think* I've solved the instability by setting the BIOS DRAM Voltage back to AUTO, as opposed to the memory manufacturer's suggested settings - some motherboards don't have this voltage calibrated correctly, apparently. My memory manufacturer (GeIL) also recommends setting the voltage to something high (2.7 or 2.8V), but not all modules would be able to accommodate this - assuming that's what the BIOS is actually delivering of course.
Anonymous
a b V Motherboard
April 7, 2010 2:39:08 PM

PCIE Frequency 333 ???

Leave auto for this section and it should be ok!

I think that this value should be 100 Mhz, not 333 MHz.
!