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ATX motherboard in dark grey with black heatsinks and a boxed Ryzen 9 9950X3D CPU

MSI

MSI MAG X870E TOMAHAWK WIFI AMD motherboard & Ryzen 9 9950X3D CPU Combo

SKU CH-B3BG-XYYVW

Pairs an AMD X870E board with a Ryzen 9 9950X3D, delivering DDR5 up to 8400 MT/s, PCIe 5.0 M.2, USB 40G, 5G LAN and Wi‑Fi 7

  • CPU Socket TypeAM5
  • CPU TypeSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processo
  • ChipsetAMD X870E
  • Number of Memory Slots4x288pin (DDR5)
  • Memory Standard4x DDR5 UDIMM, Maximum Memory Capacity 256GB Memory Support
  • Maximum Memory Supported256GB

CPU +Ryzen 9 9950X3D

  • Ryzen 9 9950X3D delivers 16 cores and 128 MB L3 cache for heavy workloads
  • X870E chipset enables DDR5 up to 8400 MT/s and 256 GB capacity
  • PCIe 5.0 x16 slot plus four M.2 drives at 5.0 and 4.0 speeds
  • Wi-Fi 7 with 320 MHz channels reaches 5.8 Gbps alongside 5G LAN
  • 1 channel audio at 32 bit 384 kHz with USB 40G port at 40 Gbps

Combo Purpose

This motherboard and CPU combo targets enthusiasts who want a ready-matched AM5 platform for heavy multitasking and gaming. The board ships with the Ryzen 9 9950X3D already paired, removing the need to verify socket compatibility or update BIOS before first boot.

Deciding Spec

The board provides four DDR5 slots supporting up to 256GB at 8400 MT/s when overclocked with Ryzen 9000 series processors. JEDEC speeds run from 4800 to 5600 MT/s, so builders who need maximum memory bandwidth should plan for high-speed kits and adequate cooling.

Build Integration

The ATX board requires a case with matching standoffs and a PSU capable of feeding the 170W CPU plus graphics card. Four M.2 slots — two from the CPU at PCIe 5.0 and two from the chipset at PCIe 4.0 — free up SATA ports for bulk storage. A built-in USB 40Gbps port, 5G LAN and Wi-Fi 7 handle high-speed peripherals and networking without add-in cards.

Highlights

  • Ryzen 9 9950X3D delivers 16 cores and 128 MB L3 cache for heavy workloads
  • X870E chipset enables DDR5 up to 8400 MT/s and 256 GB capacity
  • PCIe 5.0 x16 slot plus four M.2 drives at 5.0 and 4.0 speeds
  • Wi-Fi 7 with 320 MHz channels reaches 5.8 Gbps alongside 5G LAN
  • 1 channel audio at 32 bit 384 kHz with USB 40G port at 40 Gbps

Specifications

BrandMSI
SeriesMAG X870E TOMAHAWK WIFI+R9 9950X3D
ModelMAG X870E TOMAHAWK WIFI+R9 9950X3D
Part NumberMAG X870E TOMAHAWK WIFI
CPU Socket TypeAM5
CPU TypeSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors
Socket AM5
ChipsetAMD X870E
Number of Memory Slots4x288pin (DDR5)
Memory Standard4x DDR5 UDIMM, Maximum Memory Capacity 256GB
Memory Support DDR5 8400 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s
Ryzen™ 9000 Series Processors max. overclocking frequency:
• 1DPC 1R Max speed up to 8400+ MT/s
• 1DPC 2R Max speed up to 6400+ MT/s
• 2DPC 1R Max speed up to 6400+ MT/s
• 2DPC 2R Max speed up to 4800+ MT/s
Supports AMD POR Speed and JEDEC Speed
Supports Memory Overclocking and AMD EXPO™
Supports Dual-Channel mode
Supports Non-ECC, Un-buffered memory
Supports CUDIMM, Clock Driver bypass mode only*
* CUDIMM support and POR boot frequency may vary by CPU series, with manual
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
PCI Express 5.0 x161 x PCI Express 5.0 x16
PCI Express 4.0 x161 x PCI Express 4.0 x16
PCI Express 3.0 x161 x PCI Express 3.0 x16
Serial ATA (SATA)4 x SATA 6Gb/s
M.24x M.2
M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 22110/2280 devices
M.2_2 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 devices
M.2_3 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
M.2_4 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
4x SATA 6G
M.2_1 slot (From CPU)
• Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors)
• Supports up to PCIe 4.0 x4 (For Ryzen™ 8000 Series processors)
M.2_2 slot (From CPU)
• Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series proc
Audio ChannelsRealtek® ALC4080 Codec
7.1-Channel USB High Performance Audio
Supports up to 32-bit/384kHz playback on front panel
Supports S/PDIF output
Max LAN Speed1x Realtek® 8126 5G LAN
Wireless LANWi-Fi 7
The Wireless module is pre-installed in the M.2 (Key-E) slot
Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (320MHz) up to 5.8Gbps
Supports 802.11 a/ b/ g/ n/ ac/ ax/ be
Supports Bluetooth® 5.4**, MLO, 4KQAM
* 6GHz band support may depend on every country’s regulations and Wi-Fi 7 will be ready in Windows 11 version 24H2.
** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor’s website for details. Bluetooth 5.4 will be ready in Windows 11 version 24H2.
Back I/O PortsClear CMOS Button
USB 10Gbps Type-A
USB 5Gbps Type-A
USB 2.0
5G LAN
Wi-Fi / Bluetooth
Audio connectors
Flash BIOS Button
HDMI™
USB 40Gbps Type-C
USB 10Gbps Type-C
USB 10Gbps Type-A
Other Connectors1x Power Connector(ATX_PWR)
2x Power Connector(CPU_PWR)
1x Power Connector(PCIE_PWR 8pin)
1x Front Type-C Quick Charge Connector(PD_PWR1)
1x CPU Fan
1x Combo Fan (Pump_Sys Fan)
6x System Fan
1x EZ Conn-header (JAF_2)
2x Front Panel (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
3x Addressable V2 RGB LED connector (JARGB_V2)
1x RGB LED connector(JRGB)
1x TPM pin header(Support TPM 2.0)
4x USB 2.0 ports
4x USB 5Gbps Type A ports
1x USB 20Gbps Type C ports
Form FactorATX
Dimensions (W x L)243.84mmx304.8mm
Windows 11Support for Windows® 11 64-bit
FeaturesSupports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
Supports DDR5 Memory, Dual Channel DDR5 8400+ MT/s (OC)
Ultra Performance: 14+2+1 Duet Rail Power System, dual 8-pin CPU power connectors, Core Boost, Memory Boost, 8-layer PCB made by 2oz thickened copper and server-grade level material
Frozr Guard: Extended Heatsink, MOSFET thermal pads rated for 7W/mK, additional choke thermal pads and EZ M.2 Shield Frozr II are built for high performance system and non-stop experience
EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Release and EZ Antenna
Lightning Fast Game

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Questions about this item

What does the 170 W power rating of the Ryzen 9 9950X3D mean for my cooling setup?

The 170 W rating shows the peak heat the CPU can produce, so you need a cooler and case airflow capable of handling that load continuously.

What does the PCIe 5.0 x4 interface on the M.2_1 slot cap in practice?

M.2_1 runs at PCIe 5.0 x4 from the CPU, giving up to 128 GB/s bandwidth for a 22110 or 2280 SSD.

What clearance does the ATX motherboard need to fit in my case?

The board follows the standard ATX form factor, so it fits any case that supports ATX motherboards with the usual mounting holes and I/O shield cutout.

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