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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 socketsTR4
  • ChipsetAMD X399
  • Form factorATX
  • Memory slot count8 × 288pin (DDR4)
  • Supported memoryDDR4 3400+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133 * * Ple
  • Max supported RAM128 GB* * Due to the operating system limitation, the actual
  • 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.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $283.99
Pricier than about 55% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASRock
Model nameX399 Phantom Gaming 6
Processor
CPU socketsTR4
ChipsetAMD X399
Memory
Memory slot count8 × 288pin (DDR4)
Supported memoryDDR4 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/)
Memory channelsQuad Channel
Storage
SATA ports8 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug
M.2 slots1 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 and RAID support0/1/10
Graphics
Onboard video chipNone
Audio & video
Audio chipRealtek ALC1220
Sound channels7.1 Channels
Connectivity
Ethernet controllerDragon RTL8125AG
Second LAN controllerIntel I211-AT
Maximum network speed2.5 Gbit/s + 1 Gbit/s
Ports & slots
PCIe 3.0 x16 slots3 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
Additional 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)
Rear panel 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 USB headers2 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)
Power
Power connectors1 × 24-pin ATX Power Connector
2 × 8-pin 12 V Power Connectors
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 supportSupported
In the box
In the boxAccessories:
- 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
More details
LightingRGB

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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