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ATX motherboard in dark grey and black with eight DDR4 slots and three PCIe x16 slots

ASRock

ASRock X399 Phantom Gaming 6 sTR4 AMD motherboard

SKU CH-886R-ZKRNS

ATX board for sTR4 Threadripper CPUs with eight DDR4 slots up to 128 GB, three PCIe 3.0 x16 slots, dual 2.5 Gbps and 1 Gbps LAN, two Ultra M.2 sockets and eight SATA3 ports

  • CPU Socket TypesTR4
  • ChipsetAMD X399
  • Number of Memory Slots8x288pin (DDR4)
  • Memory StandardDDR4 3400+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133 * * Ple
  • Maximum Memory Supported128GB* * Due to the operating system limitation, the actual
  • Channel SupportedQuad Channel
  • Supports up to 180W Threadripper CPUs for heavy workloads
  • Eight DDR4 slots enable up to 128GB quad-channel memory
  • Three full-length PCIe 3.0 x16 slots for multi-GPU or add-in cards
  • Dual LAN with 2.5Gbps Dragon and 1Gbps Intel controllers
  • Two Ultra M.2 sockets plus eight SATA3 ports for flexible storage

Threadripper sTR4 platform

The ASRock X399 Phantom Gaming 6 motherboard accepts AMD Ryzen Threadripper processors in the sTR4 socket. The AMD X399 chipset exposes quad-channel memory and generous PCI Express lanes for multi-GPU or storage arrays. It targets workstations that need high core counts and abundant I/O.

180 W sustained delivery

The board is rated for CPUs up to 180 W, so the voltage regulators are built to handle prolonged heavy loads without throttling. Quad-channel DDR4 runs at 2133, 2400, 2667, 2933, 3200 or 3400 MT/s depending on the modules installed. Three full-length PCI Express 3.0 x16 slots keep graphics or compute cards fed with data during long renders.

PCIe 3.0 and M.2 Gen3 x4 limits

The Ultra M.2 socket (M2_1) supports M-key modules up to 22110 at PCI Express 3.0 x4, capping sequential throughput at 32 Gb/s. A second Ultra M.2 socket (M2_2) takes 2242, 2260 or 2280 drives at the same Gen3 x4 ceiling. Eight SATA3 6.0 Gb/s ports provide RAID 0, 1 and 10 for bulk storage.

Highlights

  • Supports up to 180W Threadripper CPUs for heavy workloads
  • Eight DDR4 slots enable up to 128GB quad-channel memory
  • Three full-length PCIe 3.0 x16 slots for multi-GPU or add-in cards
  • Dual LAN with 2.5Gbps Dragon and 1Gbps Intel controllers
  • Two Ultra M.2 sockets plus eight SATA3 ports for flexible storage

Specifications

BrandASRock
ModelX399 Phantom Gaming 6
CPU Socket TypesTR4
ChipsetAMD X399
Number of Memory Slots8x288pin (DDR4)
Memory StandardDDR4 3400+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133 *
* Please refer to Memory Support List on ASRock's website for more information. (http://www.asrock.com/)
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 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 M.2 Socket (Key E), supports type 2230 Wi-Fi/BT module
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 2230/2242/2260/2280/22110 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)*
* Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit
SATA RAID0/1/10
Onboard Video ChipsetNone
Audio ChipsetRealtek ALC1220
Audio Channels7.1 Channels
LAN ChipsetDragon RTL8125AG
Second LAN ChipsetIntel I211-AT
Max LAN Speed2.5Gbps + 1Gbps
Back I/O Ports1 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)
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
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
2 x RGB LED Headers*
1 x Addressable LED Header**
1 x CPU Fan Connector (4-pin)***
1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)****
3 x Chassis/Water Pump Fan Connectors (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 AMD LED Fan USB Header
1 x Clear CMOS Button
1 x Power Button with LED
1 x Reset Button with LED
* Support in total up to 12V/3A, 36W LED Strip
** Supports in total up to 5V/3A, 15W LED Strip
*** Th
Form FactorATX
LED LightingRGB
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin ATX Power Connector
2 x 8-pin 12V Power Connectors
Windows 11Supported
FeaturesGaming Armor:
Memory
- 15µ Gold Contact in DIMM Slots
VGA Card
- 15µ Gold Contact in VGA PCIe Slot (PCIE1, PCIE2 and PCIE3)
Internet
- Phantom Gaming 2.5G LAN
- Intel LAN
Cooling
- XXL Aluminum Alloy Heatsink
- 8 Layer PCB
- Heat Pipe Design
Audio
- Creative Sound Blaster Cinema 5
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
- 60A Dr.MOS
- Combo Caps (Nichicon 12K Black Caps)
- Nichicon 12K Black Caps (100% Japan made high quality con
Package ContentsAccessories:
- Quick Installation Guide, Support CD, I/O Shield
- 4 x SATA Data Cables
- 1 x ASRock SLI_HB_Bridge_2S Card
- 4 x Screws for M.2 Sockets
- 1 x Wi-Fi Bracket

Questions about this item

How much heat does the 180W Threadripper CPU support mean for all-day operation?

The board is rated for Threadripper CPUs up to 180W, so sustained loads will draw that power and produce matching heat; plan a cooler and case airflow rated for at least 180W TDP.

Which DDR4 memory kits must I already own to populate the 8x288pin slots?

You need DDR4 DIMMs; the board runs quad-channel at up to 3400+(OC)/3200(OC)/2933(OC)/2667/2400/2133 and supports a maximum of 128GB across the eight slots.

Will my older PCIe 3.0 x16 graphics cards and SATA SSDs work in the three x16 slots and eight SATA3 ports?

Yes, the three PCI Express 3.0 x16 slots accept legacy x16 cards, and the eight SATA3 6.0Gb/s connectors support older SATA SSDs with RAID 0/1/10, NCQ, AHCI and hot-plug.

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