[3np]

It depends on how you use it. The more you leverage its strengths (by splitting out AppVMs), the larger the overhead in memory and CPU.

I've run through a few QubesOS installations over the years and would say for me it's ~2x memory and a couple of cores overhead.

[fransje26]

So aim for at least 64GB of memory?

[3np]

Yeah. I have to stay conscious of resource usage and can't run all the stuff I'd really want (which TBF is a bit) at 32.