MemTest86 Results

[sms1295]

I've complete a MemTest86 test and have attached the results. The results are showing one error. Is the report telling me what stick of RAM has the issue. If so, where can I see that. If not, how can I tell what is causing the issue.

Thank you for your help,

sms1295

[David (PassMark)]

Your CPU hit 100C under the relatively light load of doing a RAM test. So that isn't good.

Likely the RAM is bad.

The Pro version of the software can tell you which stick is bad. See,
https://www.memtest86.com/tech_DIMM_Decoding.html

Otherwise see this page about dealing with RAM errors
https://www.memtest86.com/troubleshooting.htm

In your case try testing half the RAM at a time.

Also slightly strange is this.
RAM Configuration DDR5 5600MT/s / x2 Channel / 40-40-40-76 / 1.100V
XMP Profile 1 5600MT/s 40-40-40-77 1.25V

So you are running at timings and voltages that don't exactly match the XMP profile. Was this deliberate manual changes that you made?

[sms1295]

David,

Thanks for responding. I just added two sticks of Ram to the two sticks I already had. I thought one of the new sticks might be bad because I wasn't having any issues before adding the two new sticks.

I"ll have to check my CPU fan.

I've made no manual changes to the XMP profile and not sure where I would make that change. Any guidance on how to correct the mismatch would be appreciated.


I'll be out of pocket for several days, so I'll respond to this thread then.

Thanks,

sms1295

[David (PassMark)]

Any guidance on how to correct the mismatch would be appreciated

Changes to memory speeds. timings and voltages are done in BIOS. But good general advice it to turn on XMP, then don't mess around with the other individual settings any more. Unless you really know what you are doing. And very very few people really fully understand the timings, protocols & electrical characteristics involved.
Then if the machine isn't stable with XMP on, turn it off and go back to slower, default, JEDEC values.

The slight mismatch is still strange however. Might be worth checking if there is a BIOS firmware update available.
Post a debug log if you like
https://www.memtest86.com/tech_debug-logs.html

You also have a Core i9-14900K CPU, which were notorious for instability initially (and running hot). Subsequent BIOS updates improved them however.
Top end cooling solution is definitely needed with this CPU.

[sms1295]

I've checked the BIOS and XMP is current disabled. Do the logs show something different?

I purchased MemTest86 Pro and ran the test again. This time no errors are showing. I've attached the results. Can you see a reason why no issues are showing? Also, from the test done with the free version, does it show what test failed?

[David (PassMark)]

Log file shows this:

JEDEC Profile 4800MT/s 40-40-40-77 1.1V <== This is the base default speed the RAM runs at (JEDEC is the standards organization for RAM).
XMP Profile 1 5600MT/s 40-40-40-77 1.25V <== This is the max speed this RAM should work at, with a compatible CPU & Motherboard.

When the software collects data from the CPU's memory controller, it reports this
5600 MT/s (40-40-40-76)

So that implies you are in fact running XMP. But the 77 vs 76 timing value is slightly strange. It would also be strange for the BIOS to claim XMP was turned off.

CPU is still running hot (100C) despite memory testing not being a very intense load on the CPU.

This page covers why memory testing results might not be consistent
https://www.memtest86.com/troubleshooting.htm
Also switching from the free edition to the pro edition adds a couple of additional tests and changes the CPU cores in use. It isn't unsual to get a certain amount of randomness with RAM that is marginal (on the edge of working / not working).

[sms1295]

David,

Thanks for the additional information. I'm in the process of upgrading my CPU cooler. I've also attached a screenshot from the BIOS where I believe XMP is showing disabled.

[David (PassMark)]

Yes, BIOS does seem to be saying XMP is off. Wonder if that blue star in the screen shot means anything?
Might be worth getting a 2nd opinion on the RAM speeds, CPUID.

[sms1295]

I contacted Gigabyte about the BIOS settings and they suggested I use the BIOS restore defaut option which I did. I've attached the sucessuful completed of on test cycle. Are you still seeing the below in the attached results:

RAM Configuration DDR5 5600MT/s / x2 Channel / 40-40-40-76 / 1.100V
XMP Profile 1 5600MT/s 40-40-40-77 1.25V

[David (PassMark)]

RAM is now being reported in MemTest86 as running slower.
DDR5 4532MT/s / x2 Channel / 40-40-40-76 / 1.100V

For some classes of RAM error, slower speeds can definitely help.