The ASUS PRIME X399-A is the prime choice for prosumers and content creators featuring 1-click overclocking with 5-Way Optimization, ASUS Pro Clock Technology, and multiple GPU support with SafeSlot protection. Dual M.2 and front-panel USB 3.1 deliver optimized data speeds, while AURA Sync lighting and 3D-printing mounts provide unlimited personalization.

Powered by AMD® Ryzen™ Threadripper™ TR4 processorsto maximize connectivity and speed with support for up to 128GB of DDR4 memory, dual NVMe M.2 drives, front side U.2 and front panel USB 3.1 Gen2 port
5-Way Optimization featuring Auto-Tuning and FanXpert 4provides automatic overclocking profiles for maximum OC performance while AIO and watercooling headers deliver dynamic system cooling
Patent-pending SafeSlot (3X)features an injection molding process that integrates metal framing for a stronger, firmly anchored PCIe slot built for heavyweight GPUs
Unmatched Personalizationwith ASUS exclusive AURA Sync RGB lighting, two additional RGB headers and 3D-printing mounts to customize your build
8-channel HD audioenhanced by ASUS exclusive Realtek S1220A featuring Crystal Sound 3 and driven by Japanese capacitors for warm, immersive sound

FEATURES

ONE-CLICK OVERCLOCK AND COOLING, DONE!
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. Fans stay whisper-quiet for everyday computing, and deliver optimal airflow when the system is crunching through CPU or GPU-intensive tasks. Lastly, an all-new stress test that allows users to optimize and overclock for CPU or memory-centric workloads.

ULTRA-FAST CONNECTIVITY
Speed up with onboard dual M.2 up to 32Gbps and keep your SSD cooler with an ultra-efficient heatsink. Future-proof connectivity with the Prime X399-A’s front panel USB 3.1, ready for next-gen PC cases and devices. Lastly, with the U.2 connector, experience fast data-transfer speeds and free up a PCIe slot for another expansion card.

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.

MAKE IT YOUR OWN
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 headers. And it can all be synced with an ever-growing portfolio of Aura-capable ASUS hardware. Prime X399-A also includes 2 onboard RGB headers ready to sync lighting effects with different Aura Sync compatible products.

CPU
AMD Socket TR4 for AMD Ryzen Threadripper Processors

Chipset
AMD X399

Memory
AMD Ryzen Threadripper Processors

8 x DIMM, Max. 128GB, DDR4 3200(O.C.)/3000(O.C.)/2800(O.C.)/2666/2400/2133 MHz Non-ECC, Un-buffered Memory

Multi-GPU Support
Supports NVIDIA® Quad-GPU SLI Technology

Supports NVIDIA® 3-Way SLI Technology

Supports NVIDIA® 2-Way SLI Technology

Supports AMD Quad-GPU CrossFireX Technology

Supports AMD 3-Way CrossFireX Technology

Supports AMD 2-Way CrossFireX Technology

Expansion Slots
AMD Ryzen Threadripper Processors

4 x PCIe 3.0 x16 (single@x16, dual@x16/x16, triple@x16/x16/x8 mode)

AMD X399 chipset

1 x PCIe 2.0 x4 (max at x4 mode)

1 x PCIe 2.0 x1

Storage
AMD Ryzen Threadripper Processors :

1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)

1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)

1 x U.2 port

AMD X399 chipset :

6 x SATA 6Gb/s port(s),

Support Raid 0, 1, 10

LAN
Intel® I211-AT

ASUS Turbo LAN Utility

ASUS LAN Guard

Audio
Realtek® ALC S1220A 8-Channel High Definition Audio CODEC featuring Crystal Sound 3

– Impedance sense for front and rear headphone outputs

– Internal audio Amplifier to enhance the highest quality sound for headphone and speakers

– Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking

– High quality 120 dB (Line-out at rear) and 113 dB SNR recording input (Line-in)

Audio Feature :

– DTS Connect

– DTS Headphone:X

– Optical S/PDIF out port(s) at back panel

– Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference

– Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals

– Premium Japanese-made audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity

– Unique de-pop circuit: Reduces start-up popping noise to audio outputs

– EMI protection cover to prevent electrical noise to affect the amplifier quality

Separate layer for left and right track, ensuring both sound deliver equal quality

USB Ports
AMD Ryzen Threadripper Processors :

8 x USB 3.1 Gen 1 port(s) (8 at back panel, , Type-A)

AMD X399 chipset :

1 x USB 3.1 Gen 2 port(s) (1 at mid-board)

AMD X399 chipset :

4 x USB 3.1 Gen 1 port(s) (4 at mid-board)

AMD X399 chipset :

4 x USB 2.0 port(s) (4 at mid-board)

ASMedia® USB 3.1 Gen 2 controller :

2 x USB 3.1 Gen 2 port(s) (Type-A + USB Type-CTM)

Special Features
OC Design – ASUS PRO Clock Technology

– Full BCLK range for extreme overclocking performance

ASUS Dual Intelligent Processors 5-Way Optimization by Dual Intelligent Processors 5 :

– 5-Way Optimization tuning key perfectly consolidates TPU, EPU, DIGI+ VRM, Fan Expert 4, and Turbo App

AURA :

– Aura RGB Strip Headers

– Aura Lighting Effects Synchronization with compatible ASUS ROG devices

ASUS Exclusive Features:

– USB BIOS Flashback

– AI Suite 3

– Ai Charger

– Onboard Button : Power

– ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface

– Turbo LAN

– Crystal Sound 3

– PC Cleaner

ASUS Quiet Thermal Solution:

– Stylish Design Heat-pipe solution

– Stylish Fanless Design with M.2 Heat-sink solution

– ASUS Fan Xpert 4

ASUS EZ DIY :

– ASUS EZ Flash 3

– ASUS USB BIOS Flashback

– ASUS UEFI BIOS EZ Mode

– Multi-language BIOS

ASUS Q-Design :

– ASUS Q-Shield

– ASUS Q-Code

– ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)

– ASUS Q-Slot

– ASUS Q-DIMM

– ASUS Q-Connector

Gaming Aesthetics :

– 3D printing friendly

– AURA-RGB Lighting

M.2 and U.2 Onboard (The Latest Transfer Technology with up to 32Gb/s Data-transfer Speeds for M.2 and U.2)

Back I/O Ports
1 x LAN (RJ45) port(s)

2 x USB 3.1 Gen 2 (teal blue)Type-A + USB Type-CTM

8 x USB 3.1 Gen 1 (blue)

1 x Optical S/PDIF out

5 x Audio jack(s)

1 x USB BIOS Flashback Button(s)

Internal I/O Ports
1 x 3-pin Cover fan (COV_FAN) connector

1 x Q_Code

1 x U.2 port

2 x RGB Header(s)

2 x USB 3.1 Gen 1 connector(s) support(s) additional 4 USB 3.1 Gen 1 port(s)

2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)

1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)

1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)

6 x SATA 6Gb/s connector(s)

1 x M.2_FAN connector

1 x CPU Fan connector(s)

1 x CPU OPT Fan connector(s)

3 x Chassis Fan connector(s)

1 x AIO_PUMP connector

1 x W_PUMP+ connector

1 x 24-pin EATX Power connector(s)

1 x 8-pin ATX 12V Power connector(s)

1 x 4-pin ATX 12V Power connector(s)

1 x Front panel audio connector(s) (AAFP)

1 x System panel(s)

1 x 5-pin EXT_FAN(Extension Fan) connector

1 x Thermal sensor connector(s)

1 x Power-on button(s)

1 x Clear CMOS button(s)

1 x USB 3.1 Gen 2 front panel connector

Accessories
User’s manual

ASUS Q-Shield

1 x Vertical M.2 bracket set

4 x SATA 6Gb/s cable(s)

1 x M.2 Screw Package

1 x Supporting DVD

1 x SLI HB BRIDGE(2-WAY-M)

1 x Q-Connector

BIOS
128 Mb Flash ROM, UEFI AMI BIOS, PnP, WfM2.0, SM BIOS 3.0, ACPI 6.1, Multi-language BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, F11 EZ Tuning Wizard, F6 Qfan Control, F3 My Favorites, Last Modified log, F12 PrintScreen and ASUS DRAM SPD (Serial Presence Detect) memory information

Manageability

WfM 2.0, DMI 3.0, WOL by PME, PXE

Operating System

Windows® 10 64-bit

Form Factor
Extended ATX Form Factor

12 inch x 10.6 inch ( 30.5 cm x 26.9 cm )