Supermicro SSG-2027R-AR24 Storage 2U Barebone Dual Intel Xeon E5-2600 and E5-2600 v2 processor Up to 1TB DRAM LRDIMM SATA3, SAS2 Dual 10GbE, IPMI LAN port | Wiredzone
My current work-in-progress build, with dual Xeon E5-2658 V3's (24 cores/48 threads @ 2.3ghz), 64gb of DDR4 ECC ram, and (temporary) dual R9 390x's. No over the top RGB, no mini-itx minimalism,
Titan X399 - Dual Intel Xeon E5 v4 Broadwell-EP Workstation Computer up to 44 Cores – Best Workstation for 3D Studio Max
Amazon.com: SHANGZHAOYUAN X99 Dual CPU Motherboard LGA 2011-3 Server Motherboard for Intel i7 5th/6th Gen Xeon E5 V3/V4 Series (E-ATX, 8*DDR4 ECC Max 256G, 2*NVME M.2, 2*Gb LAN, SATA 6Gb/s, PCIe 3.0) :
Newegg.com - Server E5 Motherboards and Intel® Xeon E5-2600 v2 Server Products
HUANANZHI X79-8D Motherboard with Dual CPU Xeon E5 2690 V2 10 Cores 20 Threads Super M.2 SSD Slot 2 Giga LAN Port Best Combo
Intel Xeon E5-2699 V4 benchmarking the top end E5 V4 CPU
Titan X499 - Dual CPUs Intel Xeon E5-2600 v4 Broadwell-EP Series 3D / CAD Workstation PC up to 44 cores – Best workstation for 3D Modeling and Rendering
2x Intel Xeon E5-2670 vs AMD 1950X Threadripper - CPU Benchmark - RootUsers