ASUS unveiled its new flagship motherboard for the AMD platform, designed with out-of-the-box support for 2nd gen Ryzen Threadripper WX and X processors, the Republic of Gamers (ROG) Zenith Extreme Alpha. This board features an updated design aesthetic that's aligned with the company's latest ROG Extreme motherboards on Intel Z390 motherboards. The underlying PCB layout is entirely new, and different from the original Zenith Extreme, as are the heatsinks and shrouds covering various parts of the board, including a portion of its reverse side.

The I/O shroud which runs the entire length of the board is contiguous with a large RGB LED studded shroud covering the board's two M.2-2280 NVMe slots between PCIe slots. You get a U.2 port, and additional M.2 NVMe slots through the DIMM.2 riser accessory that's included with the board. ASUS has designed the CPU VRM of this board. It's still 10-phase on paper, but uses a high-end controller; and is tuned for overclocking the beastly Threadripper WX processors. Another killer feature with this board is 10 GbE wired Ethernet, driven by an Aquantia AQC-107 controller. You still get a 1 GbE driven by an i211-AT. ASUS appears to have done some cost-cutting with the WLAN card, though, which now only supports up to 1.73 Gbps 802.11ac MU-MIMO, compared to the original Zenith Extreme's 802.11ad draft controller with 4600 Mbps top-speed. The onboard audio solution is unchanged.

To cope better with AMD 2nd generation Ryzen Threadripper processors, which come with up to four active dies on the MCM (multi-chip module), ASUS is giving away free Cooling Kits to owners of its socket TR4 motherboards, such as the ROG Zenith Extreme, ROG Strix X399-E Gaming, and Prime X399-A. The kits include a fan bracket that lets you strap a 40 mm fan onto your CPU VRM heatsink, and a so-called "SoC heatsink," designed to cool the SoC power phase MOSFETs (which now have to cope with the load of four SoC dies). The kit for the Zenith Extreme also includes a 10 mm-thick 40 mm fan, which plugs into one of your 4-pin PWM headers. The kit will neither be included with current or upcoming inventories of unsold X399 motherboards by ASUS. Customers who need it will have to contact their local ASUS office, which will verify the purchase of their ASUS X399 motherboard, and ship their kit for free.

EK Water Blocks, the Slovenia-based premium computer liquid cooling gear manufacturer proves its market leadership once again by releasing the world's first Socket TR4 based monoblock made for several ASUS X399 motherboards. The EK-FB ASUS ROG ZE RGB Monoblock has an integrated 4-pin Digital RGB LED strip which makes it compatible with ASUS Aura Sync, thus offering a full lighting customization experience.

Designed and engineered in cooperation with ASUS, this monoblock uses award-winning EK-Supremacy EVO cooling engine to ensure best possible CPU cooling. This water block directly cools AMD Socket TR4 type CPU, as well as the power regulation (MOSFET) module. Liquid flows directly over all critical areas, providing the enthusiasts with a great solution for high and stable overclocks. Using such a monoblock gets rid of the small fan that can be found on some X399 motherboards, hidden under the I/O cover.

There are two kinds of desktop CPU platforms. The mainstream tier runs from two cores up to eight, and it's great for gaming and general use. Its high-end sibling takes everything up a level with more cores, more memory channels, and more bandwidth for graphics and storage. A considerable upgrade in every regard, this high-end desktop platform appeals to power users, content creators, and prosumers who want to blur the line between desktop and workstation. AMD's Threadripper CPU is the latest addition to the desktop's heavyweight division, and it walks into the ring with an entourage of SocketTR4 motherboards in tow. This guide explains the ASUS and ROG family to help you pick the best X399 motherboard for your high-end desktop or gaming PC.

All of our X399 boards share core DNA that includes one-touch overclocking, refined cooling control, and improved RGB lighting. Yet they each have their own distinct flavor as well. The ROG Zenith Extreme brings Threadripper into the world of premium dream PCs with provisions for custom liquid cooling and 10G networking. With the Strix X399-E Gaming, hardcore gamers can build stylish rigs with power to spare for high-quality streaming. And then there's the Prime X399-A and its well-rounded foundation channeling the professional side of the platform's prodigious power. Which X399 motherboard should you buy for your build? Let's find out.