What can cause memory errors

acole1

Golden Member
Sep 28, 2005
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I have an Asus PC-DL Deluxe board with two xeon's and (originally) 4 sticks of Kingston ValueRAM (KVR333X64C25K2/1G).

It would occasionally blue screen and reboot, but I got more RAM for it (KVR333X64C25/1G) and it crashes even more often now.

This is one of 3 identical machines, I did the same upgrade to the others, and they run perfectly fine.

I have run Memtest86+ V1.70 on all 3 machines and this one only usually throws memory errors on the second test, but only if I combine the two 1GB sticks with the two 512Mb sticks. The others pass with flying colors.

I have tested every stick of ram in single and dual configurations and they all pass, and
I have seven KVR333X64C25K2/1G's and two KVR333X64C25/1G's. Both sets run at 2.5-3-3-7.

I even had a spare motherboard of the same exact model, swapped it out, and I still get the same errors.

I put it back to it's original state (where it crashed less with the 4x512) and it will not error on memtest86+, but I ran 4 instances of prime95 on the high ram usage, and they got FATAL ERROR messages in times ranging from 7min to 2hrs 30min.

Right now I put in some Corsair 256mb PC3200 2-3-3-7 ram from another computer, it passed memtest86+ and I am running prime95 again to see if it errors out.


So in conclusion, there seems to be a correlation between amount of RAM in the system and the errors, but I can't seem to think of what could be causing them, especially since I swapped out the motherboard too.

Any ideas?

Thanks!

Edit:
Just stopped the Prime95 sessions running on the Corsair ram. They were all still running after 65hrs and 11min with no errors.
 

Quiksilver

Diamond Member
Jul 3, 2005
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Have you tried increasing their voltage or the northbridge voltage by .01 - .02?
 

fire400

Diamond Member
Nov 21, 2005
5,204
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disable all the extra features in the BIOS.

could be other hardware conflicting, trying to talk with other components, and somehow the RAM and the mobo just don't like 'em. disconnect everything and put peices back on and boot one at a time.

it could also be the board just bein' particularly b!tchy, not ever'thin' sup'd to be perfect with comp builds.

you flashed the system yet?
 

acole1

Golden Member
Sep 28, 2005
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Originally posted by: fire400
disable all the extra features in the BIOS.

could be other hardware conflicting, trying to talk with other components, and somehow the RAM and the mobo just don't like 'em. disconnect everything and put peices back on and boot one at a time.

it could also be the board just bein' particularly b!tchy, not ever'thin' sup'd to be perfect with comp builds.

you flashed the system yet?

haven't tried v increase yet...

all i have plugged in are HD, CDROM, video card, 2 CPU's and the ram and i'll have to check and see if there is a bios flash... i hadn't thought of that yet.

thanks!!