The ODROID-H4 SBC powered by an Intel Processor N97 or Core i3-N305 Alder Lake-N CPU has been shown to work with up to 64GB DDR5 since Crucial/Micron released such modules earlier this year.
There’s always been a lot of confusion about the maximum memory supported by Alder Lake-N CPU, mostly due to Intel Ark, which should be a trusted official source, but that will often wrongly report a maximum of 16GB RAM:

But people quickly found out that 32GB RAM would work just fine, and the guys at Hardkernel even tested several 48GB RAM modules successfully when they launched the ODROID-H4/H4+/H4 Ultra single board computers last year.
But domih noted that 64GB DDR5 SO-DIMM modules were now available, and several members of the odroid forums purchased 64GB CT64G56C46S5 DDR5 memory modules to give it a try. It worked for them.

Pugglewuggle further added that IBECC worked too, and with faster memory bandwidth than the 48GB module:
14.8 GB/s with IBECC on with the 64GB module vs 12.2 GB/s with IBECC on with the 48GB module.
If you’d like to reproduce this setup, you can find Crucial 64GB DDR5-5600 SODIMM memory (SKU: CT64G56C46S5) for about $157/168 Euros on Amazon, Newegg, or B&H. It looks harder to find outside the US and Europe, as it’s not listed on AliExpress, and I could not find it on popular online shops in Thailand.
Note that you’d have to check where your Alder Lake-N mini PC or SBC supports DDR5 SO-DIMM memory, since some ship with soldered-on LPDDR5 memory and others only support DDR4 modules, so the Crucial 64GB DDR5 memory stick would not be supported on those platforms.
Thanks to freeware2 for the tip.

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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Cool, now we will be able to run 70b models at 0.1 tps!
(jokes aside, it’s great that memory is now so dense)