64GB UDIMM for AM5 mentioned in latest video

Hardware Hub
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Hi Wendell, you mentioned that 64GB UDIMMs are now available in your latest YouTube video “Zen4(c?) APUs; 2400 infinity fabric stable?! 8700G and 8600G Reviewed”. Do you (or anyone in the community) have a brand and any availability information?

Thanks!

Eric

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  • Kingston models based on Micron Dies have been tested at ASRock.

  • I took his tone more in the way of “Yay, 256 GB UDIMM are officially supported on AM5 now (meaning the manufacturers at least plugged in real memory and got it working) so retail 64 GB UDIMMs should be available soonish.”

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That’s fantastic news! :slight_smile: Will be nice to have 256GB capable machines with 7000 and hopefully 9000 series Ryzens. Thanks for the reply!

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:facepalm:

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See everyone keeps saying 256gb and what I keep saying is it’s reasonably possible to have 128gb. Those aren’t the same thing :slight_smile:

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Thanks for the clarification! I do still hope for 64GB UDIMMs with a higher supported clock speed with 2 DIMMs.

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Does Micron have to be bad here?

The chips for the 64 GB UDIMMs have to be completely different due to the doubled memory density compared to 32 GB UDIMMs…
…so all bets are off?

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Because of the ridiculous latency(timings) of Micron chips.

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They’re first to market at this density though?
I get that Micron is still playing catch-up in a lot of ways, but they’re doing a lot better lately than Elpida was before getting absorbed, and being first to market on density is a pretty big deal.
Also, it’s not like Samsung and Hynix don’t have lemons. I’ve seen people rank some Micron DDR4 IC revisions close to the top for overclocking.

Probably better to wait for these to hit the market and see how they perform.

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It looks like they have been cooking 64GB dimms since AGESA 1.1.0.0.

https://www.msi.com/news/detail/MSI-Motherboards-Unleash-Extreme-Power-with-Memory-Capacity-Boosted-To-256GB---142879

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Is there anything new on this topic? Many months ago the first AM5 boards received 256GB max memory support and yet I haven’t been able to find any 64GB UDIMM kits.

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Reposting this from another thread:

Not sure how much we can believe it, nor if other manufacturers will bring this to the market a bit sooner.

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Ive noticed that recent MBs say they support 256GB of ram for DDR5… but have yet to see an 64G dimms.

i guess one day

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I cannot wait to replace 4x32 GB with 2x64 GB, would pay extra for that. I do use ECC UDIMMs, though, as such, expecting it to be a while for any sort of availability.

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EPYC 4004 series is certainly boosting demand for it. ECC 128GB@5600MT/s would be great and very beneficial to a lot of stuff.

clock speeds are nice, but I wouldn’t pay for a replacement. Once in slot, always in slot. It’s still only dual channel, so the gains in GB/s are marginal. But I would totally get them for my next Epyc 4004 system