10x Xeon Phi Coprocessor cards, 4x E7-8895v2, 512gb of RAM, 6 PSU's, and more adapters and dongles than you can shake a stick at, with a 1500 Watt idle and a folding
Here's htop on a maxed out Xeon Phi 31S1P : r/homelab
Get a mid-range Intel Xeon Phi 31S1P for under $200
Intel Announces Xeon Phi Co-Processors
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Intel Xeon Phi 31S1P 8GB GDDR5 PCIe watercooled with Alphacool NexXxoS GPX - Intel Xeon Phi [1011804] from WatercoolingUK