256 GB RAM possible on AMD Ryzen™ AI 9 HX 370?

I am just wondering, if there is anything stopping me from putting 256 GB of RAM in? Given 128 GB DDR5 SO-DIMMs of course, which seemingly don’t exist just yet … The processor itself does support it. But is there any reason the mainboard would not?

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not any that I can see, but 64gb sodimm’s don’t exist, so I wouldn’t expect 128gb sodimms to come out anytime soon because they just arent that dense

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Thank you very much, this opens up nice options for the future. Good news for right now: 64 GB SODIMMs could be bought and are on the market (for example from crucial). So a 128 GB build is on the table …

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yeah.HOLY OMG ITS REAL
WOW OMG CRUCIAL OMG WOW

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I have preordered a 64x2 kit from Crucial, will test it out once both the kit and the 370 mainboard arrive.

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it works on 7040 cpus so it should on these ones

Yep works like a charm in my 7840u :slightly_smiling_face:

And works with the AI 9 370 board as well :partying_face:

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A few days and I can check it out myself …

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64 GB DDR5 modules (both SODIMM and UDIMM modules for desktop systems) just recently became available, so I don’t expect to see 128 GB modules in the near future. The DDR5 standard covers them, but that’s theoretical; I haven’t even heard of such modules being tested by any manufacturers. They’re going to require higher density RAM chips than anybody is currently making. 96 GB modules are likely to appear before 128 GB modules do.

Given the power consumption and speed factors that are pushing laptops toward soldered RAM, LPCAMM2, or in-package RAM (like Lunar Lake and Apple Silicon), it’s not clear that we will EVER see 128 GB SODIMMs. Modules that large may only get made in desktop form factors because the laptop market will be almost entirely upgrades to existing systems rather than new builds.

If those modules are ever made, they will probably work in Framework systems. Both the 7000 and AI 300 series CPUs have an official RAM maximum of 256 GB, in the form of 2x2R memory modules (the same kind of memory that is already being used). A BIOS update may be needed for the system to recognize RAM beyond 128 GB. Meanwhile, enjoy the support for 128 GB; although Framework still lists the official RAM ceiling as 96 GB, people have reported success with 128 GB kits from Crucial in Ryzen 7000 and AI 300 systems.

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Honestly not gonna miss sodimms IF we get a suitable alternative like lpcamm or something.

With ai and stuff currently putting massive pressure on memory density I don’t think getting dense enough memory chips in the near future is entirely unrealistic and it’s also not impossible that someone puts them on sodimms at some point.

Is that a technical limitation or just 2/4x biggest ram stick available like such ratings usually are?

It’s just 2x the biggest available RAM sticks. Each stick can only have a certain number of chips on it because unbuffered RAM drivers have limits, so it can’t just be done by putting more chips on a module (not to mention the physical limitations of the SODIMM form factor); it will require chips with more RAM cells than the largest ones that are currently available.

I expect to see those larger modules in the future in the desktop DIMM form factor. I’m just doubting that we will see them in the SODIMM form factor, or perhaps they will get made but only by second-tier manufacturers. Kind of like how the major companies have now stopped making DDR3 sticks but you can still get them from smaller makers.

Yeah it’s gonna need denser memory chips than currently available

I am fairly sure the unbuffered desktop dimms and soddims have the same number of memory chips.

I was pretty surprised the 64gb dimms came out in sodimm first (if only very slightly).

They do. My doubts about 128 GB SODIMMs are about lack of market demand because of new systems moving away from SODIMMs, not technical feasibility. A few Framework owners aren’t going to be enough to get major manufacturers to make them.

There is also the mini pc market still using sodimms and the effort required to make the dimms is relatively small compared to making the memory chips so I would expect sodimms to show up once dense enough memory chips are available.

On the flip side of this argument, samsung had 32Gbit memory chips since early to mid 2024 and it looks like noone bothered to use them in a 64gb udimm (so or not). Then crucial came out of nowhere making 64Gb dimms using 32bit micron dies that aren’t evn on microns website jet.

We’ll see but I agree that we’ll probably see 96Gb dimms long before 128Gb ones.