Supermicro C9X299-RPGF

This is an ATX board on the LGA2066 socket. Memory support covers 8 DDR4 slots up to 256GB total. Expansion covers 2 M.2 slots and 2 PCIe slots. Pick the board for its socket before anything else — chipset niceties come after.

Expect to pay around $778.40, which lands it among premium options. Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current motherboard prices across retailers. Support and warranty service run through Supermicro, with terms that vary by region. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build.