Mailinglist Archive: opensuse (911 mails)

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Re: [opensuse] Re: memtest only seeing 48GB out of 64GB?
  • From: Greg Freemyer <greg.freemyer@xxxxxxxxx>
  • Date: Thu, 31 Dec 2015 11:17:16 -0500
  • Message-id: <>
On Thu, Dec 31, 2015 at 10:48 AM, Malcolm <malcolmlewis@xxxxxxxxxxxx> wrote:
On Thu 31 Dec 2015 10:33:12 AM CST, Greg Freemyer wrote:

On Wed, Dec 30, 2015 at 5:21 PM, jdd <jdd@xxxxxxxxx> wrote:
Le 30/12/2015 21:51, Greg Freemyer a écrit :

In all 3 if I add a second DIMM, then the "bad" DIMM disappears and
only the second one is visible.

Is that a normal failure mode?

If so, is it a bad DIMM, or something wrong with the MB?

do memtest report exactly the same ram model number?

The model number was the same. So was the "version" number on the
paper label on the DIMMs.

Per the Tech Support guy, the version number reflects the source of
the ICs (Integrated Circuits) on the DIMM.

Every time the supplier of the ICs or the specs of the ICs change they
change the version number.

In my case all 4 sticks had the same version number. Even then the
Tech Support guy said they was no guarantee they would work together.

Have you looked in the BIOS Ai Tweaker menu, check the RAM specs and
set the voltage etc as per the specs rather than auto?

I have not, but both the MB and Corsair recommend setting XMP (extreme
memory profile) in the bios and letting that optimize the various RAM
specs. In particular it sets the voltage to 1.2v which is what the
Corsair spec calls for.

I let memtest run all night and there were no errors.

I cycled power this morning and my RAM dropped from 64GB to 48GB again.

Time to take Corsair up on their offer to swap out the DIMMs.

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