The ASUS X399 ROG Zenith Extreme is a product that the company developed to be the pinnacle of Ryzen Threadripper motherboards. It is a motherboard designed and marketed primarily for gaming and overclocking, yet it also has a very long list of features. As a matter of fact, the ASUS X399 ROG Zenith Extreme is so loaded that ASUS's engineers could barely fit everything on the E-ATX PCB.rnrnDespite the use of the E-ATX PCB, the ASUS X399 ROG Zenith Extreme is not actually as overloaded as one would initially expect it to be. The sheer number of subsystems, ports, and connectors that the ASUS X399 ROG Zenith Extreme has does not really stand out when compared to top-tier designs from other manufacturers. If anything, the designer had to sacrifice two SATA ports just to make space for the U.2 PCIe ×4 port, making the ASUS X399 ROG Zenith Extreme the motherboard with the fewest SATA ports available at the time of this review, where even mATX designs come with eight SATA ports. The lack of space becomes apparent when realizing that the designer was forced to move two of the M.2 slots onto a daughterboard and the 10G NIC to a PCIe ×4 card. Much of the space on the motherboard is occupied by overclocking-related chips and features, such as the several ROG chipsets and the TPU KB3720Q chipset that performs some of the automated overclocking functions. The ASUS X399 ROG Zenith Extreme also has hardware support for LN2 cooling, which may be useful only to competition overclockers but hints just how much weight ASUS placed on overclocking support with this motherboard.