Iappreciate the effort, but those are far from what i'm looking for.
u could use the (available) IBD of previous blocks they use
True, but i already mention IBD isn't what i'm looking for
You do not need separate computers for the benchmark, for more reliable results you can spin up virtual machines and selectively limit their RAM and CPU usage. You still need to get separate HDD and SSD disks but these can be passed through via PCI to the VM (I assume internet speed is constant, but even that can be throttled using different virtual adapter types).
Good idea, that could work. But the downside it's not best reflection of block size limit impact on low-end device since we use fast CPU core/RAM rather than slow CPU cores/RAM.