ASRock X99 Extreme6/3.1

An ATX board on the LGA2011-3 socket. Memory support covers 8 DDR4 slots up to 128GB total. Expansion covers 2 M.2 slots and 2 PCIe slots. Pick the board for its socket before anything else — chipset niceties come after.

Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Support and warranty service run through ASRock, 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. The category page surfaces comparable models near the same price, which makes shortlisting against this motherboard straightforward.