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ATX motherboard in black with silver heatsinks and gold PCIe contacts

ASRock

ASRock X399 Taichi sTR4 AMD motherboard

SKU CH-GMW2-8377P

ATX board for sTR4 Threadripper CPUs with eight DDR4 slots, four PCIe 3.0 x16 slots, three Ultra M.2 sockets, eight SATA3 ports, dual Intel gigabit LAN, onboard Wi-Fi and 7.1 audio

  • CPU Socket TypesTR4
  • ChipsetAMD X399
  • Number of Memory Slots8x288pin (DDR4)
  • Memory StandardDDR4 3600+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133
  • Maximum Memory Supported128GB* *Due to the operating system limitation, the actual m
  • Channel SupportedQuad Channel
  • Supports up to 128 GB DDR4 quad-channel memory for heavy multitasking
  • Four PCI Express 3.0 x16 slots enable 4-way SLI and CrossFireX
  • Three Ultra M.2 sockets deliver PCIe Gen3 x4 and SATA3 6.0 Gb/s storage speed
  • Dual Intel Gigabit LAN plus 802.11 ac Wi-Fi give wired and wireless network redundancy
  • Realtek ALC1220 7.1-channel audio with DTS Connect provides high-definition sound

Socket and chipset

This motherboard uses the sTR4 socket with the AMD X399 chipset. It is built for first- and second-generation Ryzen Threadripper processors. The board delivers an 11-phase digital power design with Dr. MOS components.

Memory capacity and headroom

Eight 288-pin slots support quad-channel DDR4 up to 128 GB. Speeds range from 2133 to 3600+(OC) with intermediate steps at 2400, 2667, 2933 and 3200. A 32-bit operating system limits usable memory to under 4 GB.

Expansion and storage interfaces

Four PCI Express 3.0 x16 slots and one PCI Express 2.0 x1 slot provide multi-GPU flexibility. Three Ultra M.2 sockets accept 2230, 2242, 2260 and 2280 modules with PCIe Gen3 x4 or SATA3 6.0 Gb/s. Eight SATA3 ports and one U.2 connector add further storage options.

Highlights

  • Supports up to 128 GB DDR4 quad-channel memory for heavy multitasking
  • Four PCI Express 3.0 x16 slots enable 4-way SLI and CrossFireX
  • Three Ultra M.2 sockets deliver PCIe Gen3 x4 and SATA3 6.0 Gb/s storage speed
  • Dual Intel Gigabit LAN plus 802.11 ac Wi-Fi give wired and wireless network redundancy
  • Realtek ALC1220 7.1-channel audio with DTS Connect provides high-definition sound

Specifications

BrandASRock
ModelX399 Taichi
CPU Socket TypesTR4
ChipsetAMD X399
Number of Memory Slots8x288pin (DDR4)
Memory StandardDDR4 3600+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133
Maximum Memory Supported128GB*
*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 x164 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 x11 x PCI Express 2.0 x1 Slot
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 and PCIE4)
Serial ATA (SATA)8 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug
M.22 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)*
1 x U.2 Connector**
* 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 ChipsetIntel i211AT
Second LAN ChipsetIntel I211-AT
Max LAN Speed2 x 1Gbps
Wireless LANIntel 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
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 Switch
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
* Ultra USB Power is supported on USB3_6 port.
* ACPI wake-up function is not supported on USB3_6 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 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
Form FactorATX
LED LightingRGB
Dimensions (W x L)12.0" x 9.6"
Power Pin1 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)
Windows 11Supported
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

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