https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 25 Apr 2026 02:47:13 +0000 Fri, 17 Jul 2020 12:21:56 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=14500 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=14500&PID=77348&title=pmu-memory-training-error#77348 Author: A7rotta
Subject: 14500
Posted: 17 Jul 2020 at 12:21pm

I have tested 4 different RAM kits, 2 different CPU's and I still have this same issue on my ASrock x470 K4. Did you reach any conclusion or get any response from ASrock about this?]]> Fri, 17 Jul 2020 12:21:56 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=77348&title=pmu-memory-training-error#77348 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75925&title=pmu-memory-training-error#75925 Author: khilker15
Subject: 14500
Posted: 28 May 2020 at 10:47pm

Both with XMP and without, it appears the mobo is trying to run the RAM at 2133.]]> Thu, 28 May 2020 22:47:00 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75925&title=pmu-memory-training-error#75925 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75903&title=pmu-memory-training-error#75903 Author: khilker15
Subject: 14500
Posted: 27 May 2020 at 10:42pm

I'll check and update you later today!]]> Wed, 27 May 2020 22:42:45 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75903&title=pmu-memory-training-error#75903 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75902&title=pmu-memory-training-error#75902 Author: khilker15
Subject: 14500
Posted: 27 May 2020 at 10:42pm

Thanks!
I rest the BIOS to defaults, but no difference. I attempted to clear the CMOS, but not sure if that worked. I didn't see any messages confirming it had cleared, so I should probably try that again.

Motherboard arrived running the latest BIOS already. 3.90]]> Wed, 27 May 2020 22:42:05 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75902&title=pmu-memory-training-error#75902 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75889&title=pmu-memory-training-error#75889 Author: Synapse
Subject: 14500
Posted: 27 May 2020 at 11:15am

Does the OLOy kit run in dual channel with XMP disabled (2133 or 2400)?
16GB sticks are very likely dual-rank, it's a bit harder for the memory controller to run at higher frequencies.]]> Wed, 27 May 2020 11:15:29 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75889&title=pmu-memory-training-error#75889 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75887&title=pmu-memory-training-error#75887 Author: ThreeDee
Subject: 14500
Posted: 27 May 2020 at 9:45am

Have you reset BIOS to defaults? .. have you tried updating to latest BIOS? ]]> Wed, 27 May 2020 09:45:41 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75887&title=pmu-memory-training-error#75887 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75884&title=pmu-memory-training-error#75884 Author: khilker15
Subject: 14500
Posted: 27 May 2020 at 5:53am

In case it wasn't clear... I first tried with the OLOy 32GB memory set. When that gave me the PMU Training error, I switched to the 16gb Corsair memory, which is on the AMD compat list. But it gave the same error.

Any single chip works fine. No errors. Error only appears when running dual-channel.]]> Wed, 27 May 2020 05:53:22 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75884&title=pmu-memory-training-error#75884 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75883&title=pmu-memory-training-error#75883 Author: khilker15
Subject: 14500
Posted: 27 May 2020 at 5:43am

I bought paired dual-channel memory, but my ASRock B450M Pro/4 will only read one DIMM at a time. Either memory chip works fine alone, but when installed in a dual channel configuration (slots A2 and B2), I get the "PMU Memory Training error" warning. It still allows me to boot, but Windows only sees one of the DIMMs.

I've tried with two different paired memory sets. One of those pairs is on the AMD known compat list. Same error with both. (Both memory chips work fine in my other Intel i7 PC.)

I've tried using EUFI auto defaults, and with loading XMP profiles. Same error with both approaches.

Any other suggestions on what I should try?

Additional details:
Ryzen 5 3600
G.Skill F4-2400C16D 16 GB (8gbx2) (On AMD Compat list)
OLOy MD4U163216BEDA 32gb (16gb x 2) (not on AMD Compat list)
Corsair M.2 drive]]> Wed, 27 May 2020 05:43:26 +0000 https://forum.asrock.com/forum_posts.asp?TID=14500&PID=75883&title=pmu-memory-training-error#75883