Model

Brand

ASRock

Model

X399 Taichi

Supported CPU

CPU Socket Type

sTR4

CPU Type

Ryzen Threadripper Series

Chipsets

Chipset

AMD X399

Memory

Number of Memory Slots

8×288pin

Memory Standard

DDR4 3600+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133

Maximum Memory Supported

128GB*
*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 Supported

Quad Channel

Expansion Slots

PCI Express 3.0 x16

4 x PCI Express 3.0 x16 Slots (PCIE1/PCIE2/PCIE4/PCIE5: single at x16 (PCIE1); dual at x16 (PCIE1) / x16 (PCIE4); triple at x16 (PCIE1) / x8 (PCIE2) / x16 (PCIE4); quad at x16 (PCIE1) / x8 (PCIE2) / x16 (PCIE4) / x8 (PCIE5))*
* Supports NVMe SSD as boot disks.

PCI Express x1

1 x PCI Express 2.0 x1 Slot

Other Slots

1 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 and PCIE4)

Storage Devices

SATA 6Gb/s

8 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug

M.2

2 x Ultra M.2 Sockets (M2_1 and M2_2), support M Key type 2242/2260/2280 M.2 SATA3 6.0Gb/s module and 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)*
* Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit
1 x U.2 Connector*
* If U.2 Connector is plugged, M2_1 will be disabled

SATA RAID

0/1/10

Onboard Video

Onboard Video Chipset

None

Onboard Audio

Audio Chipset

Realtek ALC1220

Audio Channels

7.1 Channels

Onboard LAN

LAN Chipset

Intel i211AT

Second LAN Chipset

Intel I211-AT

Max LAN Speed

Dual 10/100/1000Mbps

Wireless LAN

Intel 802.11 ac Wi-Fi Module (Free Bundle)
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

Bluetooth

Supports Bluetooth 4.2 / 3.0 + High speed class II

Rear Panel Ports

PS/2

1 x PS/2 keyboard/mouse port

RJ45

2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED LED)

USB 3.1

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)*
*Ultra USB Power is supported on USB3_6 port.
*ACPI wake-up function is not supported on USB3_6 port.

S/PDIF Out

1 x Optical

Audio Ports

HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)

Internal I/O Connectors

Onboard USB

2 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 Connectors

1 x Power LED and Speaker Header
2 x RGB LED Headers*
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 Switch
1 x Dr. Debug with LED
1 x Power Switch with LED
1 x Reset Switch with LED
1 x CPU Xtreme OC Switch

*Each header supports up to 12V/3A, 36W LED Strip.
**The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
***The CPU Optional/Water Pump Fan supports the water cooler fan of maximum 1.5A (18W) fan power.
****The Chassis Optional/Water Pump Fan supports the water cooler fan of maximum 1.5A (18W) fan power.
****CPU_FAN1, CHA_FAN1, CHA_FAN2, CPU_OPT/W_PUMP and CHA_FAN3/W_PUMP can auto detect if 3-pin or 4-pin fan is in use.
*****Connect the audio device to either one of the audio connectors.

Physical Spec

Form Factor

ATX

LED Lighting

RGB

Dimensions (W x L)

12.0" x 9.6"

Power Pin

1 x 24-pin ATX Power Connector (Hi-Density Power Connector) (for Motherboard)
1 x 8-pin 12V Power Connector (Hi-Density Power Connector) (for Motherboard)
1 x 4-pin 12V Power Connector (Hi-Density Power Connector) (for Motherboard)
1 x 6-pin 12V Power Connector (Hi-Density Power Connector) (for PCIe graphics card)

Features

Features

Unique 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 all USB, Audio, LAN Ports)
ASRock Live Update & APP Shop

BIOS:
- 128MB AMI UEFI Legal BIOS with GUI support
- Supports "Plug and Play"
- ACPI 5.1 compliance wake up events
- Supports jumperfree
- SMBIOS 2.3 support
- CPU, VCORE_NB, DRAM, VPPM, PCH 1.05V, +1.8V, VDDP, PROM 2.5V, Voltage Multi-adjustment

Software and UEFI:
Software
- ASRock A-Tuning
- ASRock RGB LED
- ASRock APP Charger
- ASRock XFast LAN*
UEFI
- ASRock Full HD UEFI
- ASRock Instant Flash
- ASRock Internet Flash
- ASRock Crashless BIOS
- ASRock Easy RAID Installer
*These utilities can be downloaded from ASRock Live Update & APP Shop.

Support CD:
- Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar

Hardware Monitor:
- Temperature Sensing: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Fan Tachometer: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Fan Multi-Speed Control: CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans
- Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, VCORE_NB, DRAM, PCH 1.05V, +1.8V, VDDP

OS:
- Microsoft Windows 10 64-bit*
* Windows 10 RS2 is supported

Packaging

Package Contents

Accessories
- Quick Installation Guide, Support CD, I/O Shield
- 4 x SATA Data Cables
- 1 x ASRock 3-Way SLI Bridge Card
- 1 x ASRock 4-Way SLI-S111 Bridge Card
- 1 x ASRock SLI_HB_Bridge_3S Card
- 2 x ASRock Wi-Fi 2.4/5 GHz Antennas
- 3 x Screws for M.2 Sockets