AMD socketTR4 EATX motherboard with M.2 Heatsink, DDR4 3600MHz, Dual M.2, U.2, SATA 6Gb/s, Front-panel USB 3.1 Gen 2 connector

ASUS Prime X399-A is the EATX motherboard that's been expertly engineered for professional content creators and power users who work hard by day and play harder by night. This powerful, innovative board puts a friendly face on advanced enthusiast controls, enabling you to maximize performance, cooling and personalization with ease. So, if you live to create, explore, and to push the boundaries, look no further than the Prime X399-A.
Tune it your way
5-Way Optimization
One-click overclock and cooling, done!
One click takes care of all that complex tuning. ASUS 5-Way Optimization makes your PC smart. It dynamically optimizes essential aspects of the system, providing overclocking and cooling profiles that are tailored for your rig.

An automated tuning utility that optimizes overclocking and cooling profiles for your unique system configuration.
Fans stay whisper-quiet for everyday computing, and deliver optimal airflow when the system is crunching through CPU or GPU-intensive tasks.
All-new stress test that allows users to optimize and overclock for CPU or memory-centric workloads.
Overclock CPU
O.C.
3.925G
Default
3.4G
CPU : Ryzen™ Threadripper™ 1950X | Motherboard: PRIME X399-A | DRAM: G.Skill F4-3866C18Q-16GTZ | PSU: Cooler Master-RS850-AFBA-G1 | Water-cooling : Corsair H115i


TPU


EPU


Fan Xpert 4


Digi+ Power
Control


Turbo App
CPU performance boost
Unleash your PC's full performance with the ASUS AI Suite 3 utility. A TurboV Processing Unit (TPU) is the intelligence behind our automated system-tuning utility, offering the ability to fine-tune voltages, monitor system stats, and adjust overclock parameters for optimal performance.

All-round energy efficiency
With the Energy Processing Unit (EPU) you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.

Flexible cooling controls for air or liquid
With Prime X399-A you have comprehensive control over fans, water pumps and even all-in-one (AIO) coolers, via either Fan Expert 4 or our award-winning UEFI. Whether you're cooling with air or water, Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode, which reduces all fan speeds to below the default minimum — keeping your system whisper-quiet when performing light tasks.

Precise digital power control
Digi+ delivers real-time control over voltage droop, switching frequency and power -efficiency settings, allowing you to fine-tune CPU voltage regulation for ultimate stability and performance.

App specific optimization for professionals and gamers
Whether you're a professional designer or hardcore gamer, you'll feel the benefit of the ASUS-exclusive Turbo App every day. This intuitive tool allows you to define CPU overclocking, apply fan profiles, prioritize network data and optimize audio settings at app level, meaning your Prime X399-A system is perfectly optimized for what you're doing.

Cooler by design
Prime X399-A features the most comprehensive cooling controls ever, configurable via Fan Xpert 4 or the UEFI BIOS:

Multiple temperature sources


Dual pump headers


Back I/O fan

4-pin PWM/DC fan


ASUS Fan Extension Card support


Smart protection
Each header can be set to monitor and react to three thermal sensors, and via Fan Xpert 4 you can even assign a sensor to monitor the temperature of supported ASUS graphics cards, for optimal cooling during GPU or CPU-intensive workloads.


Media-acclaimed UEFI BIOS
The smoothest, slickest mouse-controlled graphical BIOS has been improved to make it even more appealing. Whether you're a PC novice or a seasoned overclocker, the EZ and Advanced Modes help you find your way, quickly and easily.

EZ Tuning Wizard
Quickly apply a CPU overclock to improve system performance

My Favorites
Quickly discover tuning options and add preferred tools to the list.
Learn more
Make your memory go faster
Prime X399-A is engineered to support quad-channel memory kits rated up to a staggering DDR4 3600MHz, allowing you to get the best performance from the X399 platform. We've worked with all major DDR4 memory vendors to help ensure compatibility, so you're assured the best compatibility.

OC Design – ASUS Pro Clock Technology
A dedicated base-clock generator that extends CPU and memory overclocking margins. This custom solution works in tandem with the TPU to enhance voltage and base-clock overclocking control, providing the flexibility to extract every ounce of performance from Ryzen™ Threadripper™ processors.

BCLK Range
OC
117MHz
Default
100MHz
*BCLK overclocking range will vary according to CPU capabilities, cooling, motherboard support and tuning options.
CPU : Ryzen™ Threadripper™ 1950X | Motherboard: PRIME X399-A | DRAM: G.Skill F4-3866C18Q-16GTZ | PSU: Cooler Master-RS850-AFBA-G1 | Water-cooling : Corsair H115i
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Connect everything, ultra-fast
M.2
Speed up with onboard M.2 up to 32Gbps
With x4 PCI Express 3.0/2.0 bandwidth, M.2 supports up to 32Gbps data-transfer speeds. It is the perfect choice for an operating system or application drive, providing fast access to data.

M.2 heatsink
Keep your SSD cooler
Prime X399-A has an ultra-efficient heatsink to reduce M.2 SSD temperatures by up to 20°C — and that means optimal storage performance and improved SSD longevity.



U.2 connector
Join the NVMe revolution
The revolutionary specification that lets your SSDs scream at top speed. Just attach your chosen drive to with plug-and-play ease to experience data-transfer speeds of up to 32Gbps — and free up a PCIe slot for another expansion card.
USB 3.1 Gen 2 front-panel connector
Future-proof connectivity
Prime X399-A's front panel USB 3.1 connector is ready for next-gen PC cases and devices.

USB 3.1 Gen 2 Type-A & Type-C
Ultimate-speed 10Gbps with USB 3.1 onboard
With backward-compatible USB 3.1 Gen 2 Type-A™ and reversible USB 3.1 Gen 2 Type-C™ ports, you'll experience ultimate connection flexibility and blazing data-transfer speeds of up to 10Gbps.


Intel Ethernet
More throughput, less CPU usage
Prime X399-A features the latest Intel Ethernet. Intel's LAN has the advantage of reducing CPU overhead and offering exceptionally high TCP and UDP throughput for faster, smoother data transfer.
Lower CPU workload

High TCP & UDP throughput
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Step up to multi-GPU graphics
Multi-GPU support
With support for both NVIDIA® SLI™ and AMD CrossFireX™ 2/3-WAY configurations, Prime X399-A motherboard enables multi-GPU setups so you can harness the full power of the latest graphics technologies to drive games at 4K and beyond.

SafeSlot
Protect your graphics card investment
SafeSlot* is the PCIe slot reinvented by ASUS and engineered to provide superior retention and shearing resistance. Manufactured in a single step using a new insert-molding process, SafeSlot integrates the slot with fortifying metal for an inherently stronger slot, which is then firmly anchored to the PCB through additional solder points.

*Patent pending

Upgrade to unrivalled audio

Outstanding audio
Realtek codec and unique design features for pristine, powerful audio

Prime X399-A utilizes a unique audio codec designed in close collaboration with Realtek — the Realtek S1220A. It also features an unprecedented 120dB signal-to-noise ratio for the stereo line-out and a 113dB SNR for the line-in, providing pristine audio quality. Additionally, a new impedance-sensing circuit automatically adjusts gain to ensure the optimal volume range for your headphones.

DTS Headphone:XTM
Surround sound, to go
Immersive 3D surround-sound technology provides incredible audio experiences.
Crystal Sound 3
Flawless audio that makes you part of the game
Power pre-regulator
Reduces power-input noise to ensure consistent performance.

Audio shielding
Separates analog/digital signal domains, significantly reducing multi-lateral interference.

Separate layer for left and right tracks
Ensures minimal crosstalk between audio paths.
Integrated amplifier
Capable of driving high-impedance headphones, without rolling-off high or low frequencies.

De-pop circuit
Reduces start-up popping noise to all audio outputs.

Premium Japanese-made audio capacitors
Premium parts provide an immersive sound signature, with exceptional fidelity.
Make it your own
Aura Sync
Outshine your competition
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for the built-in RGB LEDs as well as strips connected to the onboard RGB header.* And it can all be synced with an ever-growing portfolio of Aura-capable ASUS hardware.

Learn more >

Static

Breathing

Strobing

Rainbow

Color Cycle

Comet

Flash &
dash

Wave

Glowing
Yo Yo

Starry
Night

Music
effect

CPU
temperature
* The Aura RGB-strip header supports standard 5050 RGB LED strips with a maximum power rating of 2A (12V). For maximum brightness, strip length should not exceed 2m.
**One extension cable is included. LED Strips and Aura-compatible devices are sold separately.

Exclusive 3D mount for easy installation
Make it your own
Dedicated 3D mounts on the motherboard makes fitting 3D-printed parts easy. Using the same screws as M.2 drives and standard motherboard mounting holes, you can easily add nameplates and cable covers.


M.2 fan holder
A fan mount for M.2 drives to help prevent thermal throttling.
Learn more

Ready for AMD SocketTR4 Ryzen Threadripper
The ASUS Prime X399-A motherboard supports the latest AMD Ryzen™ Threadripper™ processors. Based on the innovative Zen core architecture, the high-performance Threadripper CPUs boast up to 16 cores. AMD SocketTR4 processors feature quad-channel DDR4 memory, 64 lanes of PCI Express® 3.0 and native 5Gbps USB 3.0 for superb performance.

AMD X399 chipset
The AMD X399 chipset delivers outstanding overclocking capabilities for the latest AMD SocketTR4 Ryzen™ Threadripper™ processors. It's optimized for multiple GPU configurations, including NVDIA SLI™ and AMD CrossFireX™. It also provides two 10Gbps USB 3.1 ports and eight 6Gbps SATA ports for faster data retrieval.