Supermicro E300-8D SuperServer with Intel Xe SYS-E300-8D B&H
Intel GG8067402569700 Xeon Proc D-1518 6m Cache 2.20ghz Fc-Bga14c Tray Mm 944010 for $229.50.
MITXPC Intel Xeon D-1518 Quad Core Mini Server w/ Dual 10GbE, IPMI
PCOM-B703G, Intel® Xeon® processors D-2100 NT Skylake-D family, with 2x DDR4 ECC DIMM sockets, 32 PCIe Gen3 lanes rearrangable for different combination of PCIe x16/x8/x4/x2/x1.