ASRock today introduced its new flagship socket LGA2066 motherboard, the X299 Taichi XE, recommended for Core i9 processors. This board is quite similar to the X299 Taichi, but features a completely redesigned CPU VRM, which is rated for higher current, and draws power from two 8-pin EPS connectors, instead of one 8-pin EPS on the original X299 Taichi. The CPU VRM heatsink is heavier, and offloads some of its heat onto a secondary heatsink that doubles up as a sort of I/O shroud, using a heat-pipe. This is in contrast to the ASUS ROG Strix X299-E vs. X299-XE, which are practically identical, but for a heavier VRM heatsink on the latter.

Everything south of the CPU VRM on the ASRock X299 Taichi XE is identical to the X299 Taichi, including the 4-phase memory VRM, four reinforced PCI-Express 3.0 x16 slots, three 32 Gb/s M.2 slots, ten SATA 6 Gb/s ports, networking that includes Intel-made 802.11ac, Bluetooth 4.2, and gigabit Ethernet controllers; and the onboard audio solution. The rear I/O shroud no longer spans the entire length of the board, and shrouds only the I/O, and an aluminium fin-stack heatsink. ASRock could charge a small premium for the X299 Taichi XE, even though the original X299 Taichi can very much run Core i9 "Skylake-X" processors, including the flagship i9-7980XE.