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Micro ATX motherboard in black with silver heatsinks and gold PCIe contacts

ASRock

ASRock X399M TAICHI sTR4 AMD motherboard

SKU CH-WT2M-8B1FH

Micro-ATX board for Threadripper CPUs with quad-channel DDR4 up to 3600 MT/s, three PCIe 3.0 x16 slots, dual Intel 1 GbE, 802.11 ac Wi-Fi and Bluetooth 4.2

  • CPU Socket TypesTR4
  • ChipsetAMD X399
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 3600+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133 * Pleas
  • Maximum Memory Supported64GB * Due to the operating system limitation, the actual me
  • Channel SupportedQuad Channel
  • Quad-channel DDR4 up to 3600 MHz OC for high memory bandwidth
  • Three full-length PCIe 3.0 x16 slots for multi-GPU or accelerator builds
  • Two Ultra M.2 sockets with PCIe Gen3 x4 for fast NVMe storage
  • Dual Intel I211AT 1 GbE ports plus integrated Wi-Fi 802.11 ac and Bluetooth 4.2
  • Realtek ALC1220 7.1-channel audio with premium capacitors for clear sound

AMD X399 sTR4 Micro ATX board

The ASRock X399M TAICHI pairs the AMD X399 chipset with the sTR4 socket for Ryzen Threadripper processors. Four 288-pin slots support quad-channel DDR4 up to 64 GB. Three full-length PCI Express 3.0 x16 slots and two Ultra M.2 sockets give high-bandwidth expansion in a Micro ATX footprint.

Sustained-load behaviour

Heavy multi-threaded workloads run across all Threadripper cores while the quad-channel memory controller feeds data at up to 3600 MT/s when overclocked. Dual Intel I211AT 1 Gbps LAN ports and the bundled Intel 802.11 ac Wi-Fi module maintain network throughput without thermal throttling during long render or compile sessions.

Practical interface limits

PCI Express 3.0 x16 slots deliver 16 GT/s per lane; each Ultra M.2 socket caps at Gen3 x4 for 32 Gb/s. SATA3 ports top out at 6.0 Gb/s with RAID 0/1/10 support. Wireless reaches 433 Mbps on 2.4/5 GHz bands and Bluetooth 4.2 handles peripheral traffic.

Highlights

  • Quad-channel DDR4 up to 3600 MHz OC for high memory bandwidth
  • Three full-length PCIe 3.0 x16 slots for multi-GPU or accelerator builds
  • Two Ultra M.2 sockets with PCIe Gen3 x4 for fast NVMe storage
  • Dual Intel I211AT 1 GbE ports plus integrated Wi-Fi 802.11 ac and Bluetooth 4.2
  • Realtek ALC1220 7.1-channel audio with premium capacitors for clear sound

Specifications

BrandASRock
ModelX399M TAICHI
CPU Socket TypesTR4
ChipsetAMD X399
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 3600+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133
* Please refer to Memory Support List on ASRock's website for more information.
Maximum Memory Supported64GB
* Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.
Channel SupportedQuad Channel
PCI Express 3.0 x163 x PCI Express 3.0 x16 Slots (PCIE1/PCIE2/PCIE3: single at x16 (PCIE1); dual at x16 (PCIE1) / x16 (PCIE2); triple at x16 (PCIE1) / x16 (PCIE2) / x16 (PCIE3))*
* Supports NVMe SSD as boot disks
Other Slots1 x Vertical M.2 Socket (Key E) with the bundled Wi-Fi 802.11 ac module (on the rear I/O)
15µ Gold Contact in VGA PCIe Slot (PCIE1, PCIE2 and PCIE3)
Serial ATA (SATA)8 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug
M.21 x Ultra M.2 Socket (M2_1), supports M Key type 2242/2260/2280/22110 M.2 PCI Express module up to Gen3 x4 (32Gb/s)*
1 x Ultra M.2 Socket (M2_2), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32Gb/s)*
1 x Ultra M.2 Socket (M2_3), supports M Key type 2230/2242/2260/2280 M.2 SATA3 6.0Gb/s module and M.2 PCI Express module up to Gen3 x4 (32Gb/s)*
1 x U.2 Connector**
* Supports NVMe RAID (RAID 0, RAID 1 and RAID 10)
* Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit
** If U.2 Connector is plugged, M2_1 will be disabled
SATA RAID0/1/10
Onboard Video ChipsetNone
Audio ChipsetRealtek ALC1220
Audio Channels7.1 Channels
LAN Chipset2 x Intel I211AT
Max LAN Speed2 x 1Gbps
Wireless LANIntel 802.11 ac Wi-Fi Module
Supports IEEE 802.11 a/b/g/n/ac
Supports Dual-Band (2.4/5 GHz)
Supports high speed wireless connections up to 433 Mbps
BluetoothSupports Bluetooth 4.2 / 3.0 + High speed class II
Back I/O Ports2 x Antenna Ports
1 x PS/2 Mouse/Keyboard Port
1 x Optical SPDIF Out Port
1 x USB 3.1 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
1 x USB 3.1 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
8 x USB 3.1 Gen1 Ports (Supports ESD Protection)*
2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED LED)
1 x BIOS Flashback Button
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
* Ultra USB Power is supported on USB3_5 port.
* ACPI wake-up function is not supported on USB3_5 port.
Onboard USB2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
2 x USB 3.1 Gen1 Headers (Support 4 USB 3.1 Gen1 ports) (Supports ESD Protection)
Other Connectors1 x TPM Header
1 x Power LED and Speaker Header
1 x RGB LED Header*
1 x CPU Fan Connector (4-pin)**
1 x CPU Optional/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)***
2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)
1 x Chassis Optional/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)****
1 x Front Panel Audio Connector (15µ Gold Audio Connector)*****
1 x Right Angle Front Panel Audio Connector*****
1 x Clear CMOS Button
1 x Dr. Debug with LED
1 x Power Button
1 x Reset Button
1 x CPU Xtreme OC Switch
* Supports in total up to 12V/3A, 36W LED Strip.
Form FactorMicro ATX
LED LightingRGB
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin ATX Power Connector (Hi-Density Power Connector)
1 x 8-pin 12V Power Connector (Hi-Density Power Connector)
1 x 4-pin 12V Power Connector (Hi-Density Power Connector)
FeaturesUnique Feature:
ASRock USB 3.1 Gen2
- ASRock USB 3.1 Gen2 Type-A Port (10Gb/s)
- ASRock USB 3.1 Gen2 Type-C Port (10Gb/s)
ASRock Super Alloy
- XXL Aluminum Alloy Heatsink
- Premium 60A Power Choke
- Premium Memory Alloy Choke (Reduces 70% core loss compared to iron powder choke)
- IR3555M Dr. MOS 60A
- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)
- I/O Armor
- Matte Black PCB
- High Density Glass Fabric PCB
Intel 802.11 ac Wi-Fi
ASRock Steel Slots
ASRock Ultra M.2 (PCIe Gen3 x4 & SATA3)
ASRock Ultra USB Power
ASRock Full Spike Protection (for a
Package ContentsAccessories:
- Quick Installation Guide, Support CD, I/O Shield
- 4 x SATA Data Cables
- 1 x ASRock SLI_HB_Bridge_1S Card
- 1 x ASRock SLI_HB_Bridge_2S Card
- 2 x ASRock Wi-Fi 2.4/5 GHz Antennas
- 3 x Screws for M.2 Sockets

Questions about this item

How loud or hot does the ASRock X399M TAICHI get when running a Threadripper CPU all day?

The board has no onboard video chipset so it relies entirely on your CPU cooler and case airflow; the 15 µm gold contacts on the three PCIe x16 slots and the dual Intel I211AT LAN chips add negligible heat, while the Realtek ALC1220 audio and bundled 802.11 ac Wi-Fi module draw very little power.

What other parts must I already own for this motherboard to work?

You need a Ryzen Threadripper processor for the sTR4 socket, DDR4 memory modules up to 64 GB total across the four 288-pin slots, a graphics card because there is no integrated video, and a power supply with the required EPS connectors for the CPU and PCIe devices.

Will my existing SATA SSDs and PCIe 3.0 add-in cards work with this X399 board?

Yes — the board provides eight SATA3 6.0 Gb/s ports with RAID 0/1/10 support and three PCI Express 3.0 x16 slots that can run at x16/x16/x16, so older SATA drives and PCIe 3.0 cards install and operate normally.

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