ASRock X99 Extreme4

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

PlanMyPC's builder flags compatibility problems automatically and tracks the latest motherboard deals from multiple stores. ASRock backs the product through its standard warranty channels; check the listing for region-specific terms. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked. If this motherboard is not quite the right fit, the category page lists close alternatives at similar prices for a quick side-by-side comparison.