I have a pair of SuperMicro A1SAif serving my home. I am very happy with them for always on home duties, but I find I could use a bit more grunt for lab studies. The CPU power is fine, but the practical limit of 32GB per host is ... limiting. I just snagged one of these:
Supermicro 6016TT Ibqf Twin Node 4X L5630 Quad Core 16GB Mem 4X Trays | eBay
The seller offers them in various...
SuperMicro 6016TT-IBQF - $399
Supermicro 6016TT Ibqf Twin Node 4X L5630 Quad Core 16GB Mem 4X Trays | eBay
The seller offers them in various...
SuperMicro 6016TT-IBQF - $399