The ASRock X399 Phantom Gaming 6 hardware is one of the cheapest X399 motherboard currently on the market and brings the Phantom Gaming name to the high-end desktop market. This entry-level option for Threadripper uses a 2.5 gigabit ethernet controller, and is one of only a few boards to do so. It also offers a trio of M.2 slots, but supports only for Threadripper processors up to 16 cores due to its design.