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bad modules, CMX512-3200C2PT


tiefe

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First, here's my configuration:

 

D875PBZ Intel motherboard

3.0 GHz P4 cpu

MSI G4MX440 video card

4 x CMX512-3200C2PT memory

 

After putting up with system flakiness for longer than I should have, I finally caught a clue when I discovered this site and memtest.org. Running memtest86+ on the full memory configuration showed some definite single-bit errors. Did try alternate timing after some searching posts here; no difference between 3-4-4-8 and the default 2.5-3-3-8 timing. I finally ran memtest on each DIMM individually, using the same slot each time. Two of the modules passed multiple times, while the other two each failed within minutes. Looks like a hard failure to me. And the system running on the two passing DIMMs is running rock-solid now.

 

All four modules were purchased together from ZipZoomFly, but their 30-day return period has expired and then some. RMA time, or is there something else I should try?

 

tiefe

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Please see if you have the option to set the Dim Voltage and if you do set it to 2.775 Volts and test the suspect modules again with http://www.memtest.org to be sure. If you do RMA them I would suggest you send all 4 so they match.

And If you still get errors, please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it!

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Please see if you have the option to set the Dim Voltage and if you do set it to 2.775 Volts and test the suspect modules again with http://www.memtest.org to be sure. If you do RMA them I would suggest you send all 4 so they match.

And If you still get errors, please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it!

 

Not too surprisingly, I could find no option for adjusting the DIMM voltage (Intel boards aren't known for their tweakability). And to answer Wired's question, all four modules were ordered as a pair of TWINX packs, but it's impossible to know at this point which ones were paired with which.

 

I'll get the RMA process going ASAP. Thanks for your help!

 

tiefe

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Sorry about the delayed response, but I was reluctant to tear down my (finally) stable system until my RMA info arrived, which it now has. I inspected all four modules, and all have identical lot and version labels:

 

XMS3202v1.2

0325008

 

All other markings were, of course, identical as well.

 

tiefe

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I would try and manually set the timings to Cass 2.5-4-4-8 and test the system with http://www.memtest.org. If you get errors, try Cass 3-3-3-8.

 

Unfortunately, that is no longer possible. All four modules are en route back to Corsair, as of Saturday, 2/26. Should arrive Wednesday, I'm told. Needless to say, the first thing that will be booted with the return/replacement memory will be memtest.

 

tiefe

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  • 3 weeks later...

Just wanted to let you know that the replacement memory arrived a couple days ago, and is working great. These TwinX pairs have slightly different version and lot codes, so I made very certain to install them correctly for proper dual-channel function. It turns out these modules come up automatically at 3-3-3-8 timing, and they've passed multiple iterations of memtest with flying colors. Finally, 2 GB of error-free goodness.

 

Thanks for your help!

 

tiefe

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