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Asus P5Q-SE2 and TWIN2X4096-6400C5


3tones

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I am having trouble with my Asus P5Q-SE2 and TWIN2X4096-6400C5. When running memtest 2.01, I get many errors. I have tried many configurations, and here is what works and what doesn't:

 

DIMM_A1 w/module #1: OK

DIMM_A1 w/module #2: OK

DIMM_B1 w/module #1: OK

DIMM_B1 w/module #2: OK

DIMM_A1 and DIMM_B1 filled: frequent errors

DIMM_A2 and DIMM_B2 filled: frequent errors

DIMM_A1 and DIMM_B2 filled: OK

 

The manual says for 2 dimms, I should put the memory in DIMM_A1 and DIMM_B1. I've tried voltages 1.8 to 2.0, Manually setting the speed to 800Mhz and 667 Mhz, disable/enable memory remap, and disabling legacy USB support. I cannot seem to get memtest to run without errors on the recommended slot configuration. Can someone help me out?

 

Thanks,

Tom

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Don't put any time in on this one yet. It appears that all I needed to do was push the Northbridge Voltage to 1.2 (from the default of 1.1) and it appears to be working ok now. I will run memtest and post the final outcome.
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Good news - memtest ran 2 passes without error. So, from default settings for Asus P5Q-SE2 and TWIN2X4096-6400C5 I changed the Northbridge Voltage to 1.2 (from the default of 1.1) and things are working fine.
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Well done. Good research on the default voltage of the MCH.

 

Good news - memtest ran 2 passes without error. So, from default settings for Asus P5Q-SE2 and TWIN2X4096-6400C5 I changed the Northbridge Voltage to 1.2 (from the default of 1.1) and things are working fine.
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  • 4 months later...

An update:

 

I reloaded this box with Windows and proceeded to copy 400GB of data to the new drives. I'm paranoid, so I ran MD5's on the source (linux) and destination (windows on this box). I found that files were randomly corrupted, and MD5's randomly not right when verifying them (they would be right the second time). After hours of troubleshooting, I finally pushed the voltages a touch. I pushed a few just because. From the defaults, my voltages are:

Memory Voltage +.01V

North Bridge Voltage +.02V

South Bridge Voltage +.01V

 

I know these are small changes, but are there any risks I should be aware of by pushing these up a little? I know people push them farther than that, so I'm not too concerned... I just don't fully understand the consequences of what I'm doing.

 

The files no longer corrupt when copied, and the MD5's all checkout. This was an odd problem. I compared 2 pictures that didn't match from the source to destination, and just one bit in the middle of the file was different.

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Ok... I'm getting frustrated now, and I'm not sure what the problem is...

 

I started copying my files again to the final destination, and I'm getting corrupted files again. (copying NTFS->NTFS via WinXP, on seperate SATA drives in the same machine) I tried pushing the memory voltage to 2.1, and it seems to get better, but I haven't pushed it higher than that. I'm trying to narrow down the problem, so I ran memtest overnight, and so far it has 9 passes with no errors. However, my problem still remains.

 

Once again, I know this is a memory forum. Can someone give me some clues as to what it might be, since the memory seems OK? Is my mobo crap?

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Finally... some peace.

 

I ran memtest for 24+ hours. It ran over 30 times with 0 errors, so I knew it wasn't the RAM or my voltage settings. I finally decided to pull a RAM chip, so I only was running 2GB. Since then, everything is perfect. I knew that windows xp 32bit doesn't always support 4GB useable memory, but I didn't think it would have problems with it.

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