Asus PRIME X399-A
 | Outdated Product Socket: TR4; Form factor: E-ATX; Size (mm): 305x269; Chipset: AMD X399; DDR4 (slots): 8; Memory module: DIMM; RAM frequency (MHz): 3200; Max. memory (GB): 128; SATA 3: 6; M.2 connector: 2; U.2 connector: 1; PCIe support: 3.0; CrossFire (AMD); SLI (NVIDIA); Steel PCIe connectors; Sound (channels): 7.1 |
Asus PRIME X399-A
Form Factor:E-ATX
Socket:TR4
Chipset:AMD X399
BIOS:Ami
RAM slots:DDR4 8 sl
RAM form factor:DIMM
RAM clock:3200 MHz
Sound (channels):7.1
Connectors:M.2
Power connector:24-pin
Processor power:8+4-pin
BIOS update button on the back. Eight slots of RAM. Three slots for video cards. Two M.2 connectors. Customizable RGB lighting. Support for CPU and memory overclocking.
Not all of the three graphics cards will be able to run at full speed.
All specifications
Specifications PRIME X399-A
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The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Asus 2026 - new arrivals, bestsellers, and the most relevant models Asus.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Asus 2026 - new arrivals, bestsellers, and the most relevant models Asus.
Series Asus Prime (stability/durability)Compare using chart →
micro-ATX, socket LGA 1700, chipset Intel B760, 4 x DDR4, DIMM, 5333 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B650, 2 x DDR5, DIMM, 6400 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket AM4, chipset AMD B450, 4 x DDR4, DIMM, 4400 MHz, USB-C, HDMI, M.2, > 4 SATA3, no backlight
micro-ATX, socket AM4, chipset AMD B450, 2 x DDR4, DIMM, 4400 MHz, USB-C, HDMI, M.2, no backlight
ATX, socket LGA 1700, chipset Intel B760, 4 x DDR4, DIMM, 5066 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4400 MHz, USB-C, HDMI, M.2, no backlight
micro-ATX, socket LGA 1700, chipset Intel B760, 4 x DDR5, DIMM, 7200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
micro-ATX, socket LGA 1700, chipset Intel B760, 2 x DDR4, DIMM, 5333 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, no backlight
micro-ATX, socket AM4, chipset AMD A520, 2 x DDR4, DIMM, 4600 MHz, USB-C, HDMI, M.2, no backlight
micro-ATX, socket LGA 1700, chipset Intel H610, 2 x DDR4, DIMM, 3200 MHz, USB-C, HDMI, DisplayPort, M.2, no backlight
micro-ATX, socket LGA 1700, chipset Intel H610, 2 x DDR4, DIMM, 3200 MHz, USB-C, HDMI, M.2, no backlight
ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B850, 2 x DDR5, DIMM, 9600 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket LGA 1200, chipset Intel H510, 2 x DDR4, DIMM, 3200 MHz, USB-C, HDMI, DisplayPort, M.2, M.2 cooling, no backlight
micro-ATX, socket LGA 1200, chipset Intel H470, 2 x DDR4, DIMM, 3200 MHz, USB-C, HDMI, M.2, no backlight
micro-ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4400 MHz, USB-C, HDMI, M.2, no backlight
micro-ATX, socket AM5, chipset AMD B650, 2 x DDR5, DIMM, 7200 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, no backlight
micro-ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4866 MHz, USB-C, HDMI, M.2, Wi-Fi, no backlight
ATX, socket AM5, chipset AMD B650, 4 x DDR5, DIMM, 7600 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B650, 4 x DDR5, DIMM, 6400 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, no backlight
AccessoriesAll accessories for Asus PRIME X399-A →
Video reviews
ASUS Prime X399-A Motherboard Review
27 December 201826 847 view
Prime X399-A REVIEW. My first Threadripper motherboard!
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Asus PRIME X399-A Unboxing with Close-Up Shots & Build Quality
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ASUS PRIME X399-A FOR AMD RYZEN Threadripper
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Asus Prime x399-A Motherboard Unboxing
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Big size — big possibilities
Motherboards for AMD Threadripper processors turned out to be extremely expensive — from $350. That's even more expensive than Intel's competing professional platform Basin Falls.
Like other motherboards with eight RAM slots (four to the left and four to the right of the processor), ASUS Prime X399-A is made in the E-ATX format, that is, it is not only long, but also wide. Because of this, it may not fit in some cheap or old MidiTower cases.
Jewelry work
You need to be extremely careful when installing the Threadripper processor in the TR4 socket. This is the first platform in the history of AMD, when the contact legs migrated from the processor to the motherboard. In addition, the pins have become thinner, and their number is greater (4094 versus 1331 for socket AM4). ASUS engineers announced support for overclocking the RAM to a frequency of 3600 MHz, but this bar will most likely be taken only if one memory module (maximum 16 GB) is installed. Whereas Threadripper-based PCs are most often assembled for the sake of a large amount of RAM (64+ GB, that is, at least four modules). You can install three video cards according to the x16 + x16 + x8 scheme, that is, the third one will work at half strength.
cold drives
The large chipset heatsink performs two additional functions at once: it cools the M.2 drive and glows with all the colours of the rainbow (Aura Sync RGB technology). The second M.2 SSD is mounted vertically and comes with a metal support. Perhaps, over time, more affordable models of TR4 motherboards will appear, but for now, ASUS Prime X399-A is the minimum “ticket” to the world of Threadripper multi-core processors.
We recommendCompare using chart →
ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4733 MHz, USB-C, HDMI, M.2, no backlight
ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4600 MHz, USB-C, HDMI, DisplayPort, M.2, > 4 SATA3, LAN 2.5 Gbps, CrossFire, M.2 cooling
micro-ATX, socket AM5, chipset AMD B650, 2 x DDR5, DIMM, 7200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, CrossFire, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B650, 2 x DDR5, DIMM, 6400 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, USB4, HDMI, DisplayPort, M.2, LAN 5 Gbps, Wi-Fi, M.2 cooling
ATX, socket AM5, chipset AMD X870, 4 x DDR5, DIMM, 8000 MHz, USB-C, USB4, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, White Edition
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 5 Gbps, Wi-Fi, M.2 cooling, no backlight, White Edition
micro-ATX, socket LGA 1700, chipset Intel B760, 4 x DDR4, DIMM, 5333 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, M.2 cooling
micro-ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4866 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling
micro-ATX, socket LGA 1700, chipset Intel B760, 4 x DDR4, DIMM, 5333 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight