Supermicro C9X299-PG300

This is an ATX board on the LGA2066 socket. Memory support covers 8 DDR4 slots up to 128GB total. Expansion includes 2 M.2 slots and 2 PCIe slots. Start with socket compatibility for your CPU, then weigh chipset extras.

Expect to pay around $788.20, 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. Supermicro backs the product through its standard warranty channels; check the listing for region-specific terms. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build.