Occasional DRAM trainings (once per month or two)
Posted by Sensitive_Trifle7846@reddit | buildapc | View on Reddit | 12 comments
My working (and gaming a lil bit) PC is:
- CPU: AMD Ryzen 9900X, PBO Overclocked with Curve -20 downvolted
- Cooler: Thermalright Phantom Spirit 120 SE
- Mobo: ASUS TUF Gaming B650 Plus
- DRAM: Kingston Fury DDR5 32GB 5200, timings are something 40-36 etc, XMP profile active
- PSU: Montech Titan Gold 850w
- GPU: ASUS Radeon RX 9060 XT 16 Gb
- SSD: 2x 2 TB Kingston NV3 NVMe
- HDD: WD Blue 6 TB 5400
- Case: Deepcool Matrexx Mesh 55 V4
I built this PC around end of November-begginning of December 2025. Was working pretty good all the time. Negative Curve -20 was the most stable undervolting setting with stress test passing for two ours and no BSODs for months. XMP profile is active, tested RAM sticks with memtest x86 for whole night - no issues detected. The only thing that concerns me is that sometimes (rarely, I saw this maybe three times starting from November, 2025) PC boots in around minute or lil bit longer while mobo's indicator is yellow (so I presume it's RAM training) then boots fine as usual. Final Fantasy VII Remake and Rebirth are stable, Starcraft II too, The Witcher Iii WH HQ as well. Working in Cubase stable as well. Stress tests like LinPack, Furmark, OCCT (full stress test) are all passed for our and more.
Should I be concerned? Looks like it's kinda normal for AM5 systems to do memory training from time to time. Should I set negative Curve -20 for maybe -15? I can use Memory Context Restore option, but I wonder if it's better to keep it off and let it train sometimes for better outcome since that happening once per month or even more rare doesn't hurt.
jbshell@reddit
Board BIOS up to date?
Sensitive_Trifle7846@reddit (OP)
Updated it maybe 2 months ago. Don't remember ASUS publishing new AGESA for my Mobo since.
jbshell@reddit
Def something going on, then.. Did all the usual turning, test disable xmp, set manually max speed PCIe to test?
versusvius@reddit
Mine does the same, DDR5 is just ass.
Sensitive_Trifle7846@reddit (OP)
Are you using XMP profile or just stock?
versusvius@reddit
XMP of course. You never want to use stock.
Lunam_Dominus@reddit
Yeah, it happens with mine too. Sometimes it’s recommended to disable fast boot and train memory every time when running a more aggressive Oc
iamapizza@reddit
If I don't overclock, but I do run the built in xmp profile, do I still need to let it train? Or can I just ignore it.
Sensitive_Trifle7846@reddit (OP)
It is indeed overclocking. Furthermore, back in the days with Ryzen 7 1700 and DDR4 I've got pretty unstable XMP/DOCP profile for my Geil EVO sticks, had to underclock RAM a bit to make it stable. If it trains once per month - why not, let it (t)rain
Lunam_Dominus@reddit
XMP is overclocking.
I did close to 24 hours of heavy memory testing and got no errors, with fast boot on. This is why I am sure I can do that. Whether that’s the case for you - no one knows.
Sensitive_Trifle7846@reddit (OP)
Interesting, thanks for reply. I disabled fast boot for some time maybe 5 weeks ago and it doesn't seem to "force" run DRAM trainings, probably because XMP profile settings are usually not that aggressive, loading is noticeable longer with it though. Still can't understand what this training does exactly, timings and frequency are the same after that trainings
HarrisonGreen@reddit
Disable all undervolting and overclocking and run everything stock (XMP is fine).
I used to be just like you, trying to tinker and optimize everything for the best performance and temps, but in the end, as I grow older I realized my time is valuable and I care much more about stability and reliability than the machine being 5-10% faster or cooler.