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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

  • ProcessorSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processo
  • ChipsetAMD X870E
  • Form factorATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memory4x DDR5 UDIMM, Maximum Memory Capacity 256 GB Memory Support

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.

How it compares

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

Price $1,095.99
Pricier than about 90% of the 1,906 comparable items (median $224.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameMSI
Product lineMAG X870E TOMAHAWK WIFI+R9 9950 × 3D
Model nameMAG X870E TOMAHAWK WIFI+R9 9950 × 3D
Part numberMAG X870E TOMAHAWK WIFI
Processor
ProcessorSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors
Socket AM5
CPU socketAM5
ChipsetAMD X870E
Memory
Memory slot count4 × 288pin (DDR5)
Supported memory4x DDR5 UDIMM, Maximum Memory Capacity 256 GB
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
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportNon-ECC
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots4x 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 & video
Sound channelsRealtek® ALC4080 Codec
7.1-Channel USB High Performance Audio
Supports up to 32-bit/384 kHz playback on front panel
Supports S/PDIF output
Connectivity
Maximum network speed1x Realtek® 8126 5G LAN
Ports & slots
PCIe 5.0 x16 slots1 x PCI Express 5.0 x16
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
Size & build
Form factorATX
Width and length243.84mmx304.8 mm
Compatibility
Windows 11 supportSupport for Windows® 11 64-bit

Other versions of this model

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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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