I've been tempted to nab one of these, but I probably shouldn't. Quanta T41S-2U 4 Nodes 24 Bay Server Chassis W/Dual Power Supply 220V A11223 They had been going for around $400 with trays. (starting bid) Not sure how much the ones without trays will go for, but they were failing to sell for $400 earlier, so probably less. Manufactuter's website has a fair bit of information, but I can't tell what sort of trays they need. Reasonts I shouldn't get one: I don't have a 240V outlet near my rack. I don't have any DDR4 RAM. I don't have any E5-2600v3/v4 CPUs. I don't know where to get hard drive trays for these. I don't know whether the motherboards have standard power connectors etc. And even if they do, the mobo shape is awkward to use in a regular system. They only have Mgmt Ethernet, and I don't have any PCIe NICs lying around. I still haven't finished upgrading to my new E5-2620v1 systems. So, basically, it would be a money pit / time sink for me. If you want to spend the money on newer CPUs it looks like a good deal though. Just don't get in a bidding war with each other. Seller seems to have plenty of these to offload.