You might be better served by getting an older server motherboard. You can build a high RAM system (100+ GB) for under $200. The downsides are higher power cons

You might be better served by getting an older server motherboard. You can build a high RAM system (100+ GB) for under $200. The downsides are higher power consumption, and unpredictable BIOS behavior. But once you get it to boot the stability should be great