How Long Does Memory Training Take on AMD Systems When Adding RAM?

November 14, 2025 5 answers
Asked by lichenarium
I'm running an AMD setup with 64GB of RAM (2x32GB), and I'm planning to add another 32GB (2x16GB) to the mix. All the RAM is rated at 6000 MT/s, and I'm using a B650M GAMING X AX motherboard along with a Ryzen 9 7900X processor. Can anyone share how long I can expect the 'Memory training' process to take after adding the new RAM? Also, when was this feature first introduced by AMD?

Answers

tulip_bulbs
Typically, the memory training process can take several minutes. It really became noticeable with the AM5 architecture.

_85 pinball games: After the memory training, will my system just reboot to the usual login screen, or will it shut down? I'm curious about how that works.

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self-adhesive
Get ready for some slow boot times! Think of it as a throwback to the 90s with those long startup waits.
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query_615
Expect delays when trying to run four sticks on AM5โ€”it can be a bit troublesome, especially with mismatched RAM. If you manage to boot at all, running with XMP settings might be a real gamble. I'd recommend returning the 2x16GB sticks and either getting 2x48GB or 2x64GB if you need to expand your RAM.

proofsheet_9: This is really surprising. If the motherboard has four slots, why is it such a hassle to fill them? I think Iโ€™ll just stick with 64GB for now.

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a small amendment
With four sticks, your system might not even bootโ€”especially if they're mismatched. Just a heads up!
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~open.the.recipe
DDR5 doesn't like to cooperate with four sticks. If it does work, expect it to run at much slower speeds, especially when mixing different capacities.
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