I mean... with modern memory compression and SSD speeds, is this really neccesary? If you've got an NVMe SSD, you've most likely got enough bandwidth to never notice the swap kicking in (especially with a generous swappiness value). Sure there might be a couple workloads that could benefit from that kind of upgrade, but I think most people building memory-optimized rigs would rather just buy more memory, since it goes in the same DIMM anyways.