Trying to stabilize before overclocking...

[Howard_Woodard]

I've been trying to troubleshoot occasional exception code 5 abends on my Asus P5Q build. Most things that I've found on the web seem to point [most often] to RAM. So I went in to BIOS to try to manually set the timings. When I got into BIOS I didn't find everything that I expected to nor were some of the timings what I would have expected.

I don't find anything about command rate on any of the BIOS pages or within the parameter value selections. Nor do I find tRC which my memory specs says should be set to 22.

Following is from my BIOS:

Configure System Performance Settings

CPU Ratio Setting [Auto]
FSB Strap to North Bridge [Auto]
DRAM Frequency DDR2-1066MHz
DRAM Timing Control [Manual

1st Information : 5-5-5-18-3-52-6-3

CAS# Latency [5 DRAM Clocks]
DRAM RAS# to CAS# Delay [5 DRAM Clocks]
DRAM RAS# Precharge [5 DRAM Clocks]
DRAM RAS# Activate to Precha [18 DRAM Clocks]
RAS# to RAS# Delay [Auto]
Row Refresh Cycle Time [Auto]
Write Recouery Time [Auto]
Read to Precharge Time [Auto]

The RAM voltage is set to 2.1 vdc.

I can run Memtest and the Prime95 torture test forever without error. Is anyone familiar with this mobo/memory combination that can tell me how to best set it up? Or perhaps someone experienced troubleshooting exception code 5 abends?

Thanks in advance,

Howard
====================
P5Q (1611) - Quad 9450, 4 GB Corsair DDR2-1200, XFX geForce 8800 640 MB GTS, Vista Ultimate 32 bit sp1, WD 500, 640, 640 SATA II hard drives

[shadowpr]

That seems like high voltage to me. Are you sure that's what it should be?

Is this 4x1gb or 2x2gb sticks?

Where do you see this error message?

[Howard_Woodard]

Sorry, it's 2x2GB. 2.1 vdc is what the memory manufacturer (Corsair) specifies for the extended speed of 1066 MHz.

[shadowpr]

Is this the ram: http://www.newegg.com/Product/Produc...82E16820145215

Where are you seeing that error from?

Try lowering the ram to 800, and the voltage to 1.9 and see how tht works.

[KodyMoyer]

Another option is to remove one of the ram chips and test it.