ASRock Fatal1ty X299 Professional Gaming i9 XE

An ATX board on the X299 chipset, LGA2066 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.

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. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build. 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.