Anandtech reviewed the ASUS X399 ROG Zenith Extreme Motherboard
A quote from the article:
There are only a handful of motherboards for AMD Ryzen Threadripper processors currently available, with each of them having a clear marketing focus. We recently reviewed two of them, and most motherboards in this segment target the marketing towards professionals and gamers. In this review we are having a look at a board targeted to the niche market of extreme overclockers - the ASUS X399 ROG Zenith Extreme.ASUS X399 ROG Zenith Extreme Motherboard Review
The ASUS X399 ROG Zenith Extreme is an Extended ATX (E-ATX) motherboard based on AMD's X399 chipset with the currently longest and most impressive list of features amongst Ryzen Threadripper motherboards. As a matter of fact, the list of features is so long that feels as if ASUS's engineers used this design as a project to find out just how many things they can fit on an E-ATX PCB. Some of these features are unique and with usefulness limited to just extreme overclocking, such as liquid nitrogen (LN2) cooling hardware support. The current retail price of the ASUS X399 ROG Zenith Extreme at the time of this review is $507, making it by far the most expensive Ryzen Threadripper motherboard currently available, with ASUS clearly hoping to entice the most demanding enthusiasts and overclockers who are seeking the very best regardless of the price tag.