[AnssiH]

I'm pretty sure it can take 40GB RAM, see e.g. here: https://www.reddit.com/r/thinkpad/comments/bb1xwm/t480s_upgr...

I also have 64GB on my work T480 (non-s) despite "max" being 32GB.

The Lenovo-reported max RAM specs often do not take into account newer larger memory modules released after the laptop (or at least I believe this is the reason for the discrepancy).

[kawsper]

There seems to be some discrepancies in this area, this is the CPU in my T480s (with 40GB RAM): https://www.intel.com/content/www/us/en/products/sku/124967/...

Even Intel says it can maximally have 32 GB of RAM.

[ungamed]

Intel has been absolutely incorrect on this a few times. Quite often there is a conflict in ranges that the ACPI spec included in the system firmware can't deal with, but if an operating system is clever enough it can work around the problem.

It may require some ACPI trickery, but it absolutely is doable. If the firmware guys are super lazy it may just work without ACPI trickery.

Check out an example here: https://www.downtowndougbrown.com/2019/04/adventures-of-putt...

[kawsper]

That link was an amazing read, thank you for sharing, I will not admit that I understand all of it, but it was a nice adventure to read through.