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this post was submitted on 19 May 2026
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My workstation has 48 GB RAM with 50% allocation allowed to zram, no disk swapping. It works just fine. Once I use up the majority of my RAM, it kicks in the same way it would on any other system with less RAM.
Shouldn't total ram amount always be powers of 2 (forgot the reason exactly) ? It sounds like 32 +16 wouldn't be ideal ? I remember that from my early days, but maybe it has changed ?
That is correct, IIRC, the mismatch does limit how much of it can run in dual-channel. Even if a single stick is natively 24 or 48 GB, there is additional strain on the memory controller. It is the way it is on my setup since I had planned an upgrade to a full 64 GB and was holding off until a good deal on the remaining 32 GB kit, which will never come unless the AI bubble bursts.
There are some 24GB sticks around, same with 48GB sticks
Not according to the chrisdown blog post above.
What about it? I see it kicking in at least 10 GB before my RAM is full and I haven't noticed any fundamental differences between how zram works on my 48 GB workstation and my 8 GB devices. Maybe I've never had a workload that filled all 48 GB + extra zram capacity, but it's never given me an issue.