If you want ready, well engineered, water-cooled multi-GPU research workstations, my colleagues at https://comino.com https://comino.com build and sell them. Or

If you want ready, well engineered, water-cooled multi-GPU research workstations, my colleagues at https://comino.com https://comino.com build and sell them. Or you can purchase fitted waterblocks from them for many GPUs, and build your own.