Just with regard to your work in general, since I'm not sure where to put a comment, impressive work and impressive hardware collection. I wish I had a pile of decent computers, but have only one gaming PC and hopes of earning a custom HPC, like all of us, I'm sure.
That kind of hardware can benefit from 2PIC, but you're not putting all of the computers in a tub, right? I'm hoping my HPC will be made with a flat motherboard with all embedded components like stacked SRAM right on processors, two embedded GPUs, persistent memory holding everything used commonly to just start processing from off using "hotswapping" immediately, and a phase-change liquid cooling panel on a big copper heatsink with Peltiers sandwiched in for the processors and memory, and fan channels designed for turbulent pressure running on hopefully one jet receiving pre-chilled air from an external chiller, sandwiched in there and turned on as necessary, emulating the same as two-phase immersion cooling, which would be cool (pun intended) to see become a commercial cooling solution. As is, you can hook a "BedJet" to your computer as a cheap phase-change air unit. I use a mini split and a positioned fan system at night to keep costs down. My hope is to have all the air channels to go to one tube, which will go out the window, for my HPC, and not to have to constantly use air anyway.
Keep those cooling and processing energy requirements low, if possible, and keep up the good work!