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ATX motherboard with back-connect layout, silver heatsinks, CPU installed, boxed combo

MSI

MSI MAG X870E TOMAHAWK MAX WIFI PZ AMD motherboard with Ryzen 9 9950X

SKU CH-XNJD-BD4T3

AM5 motherboard with Ryzen 9 9950X, DDR5 support up to 256GB, PCIe 5.0 graphics and M.2 slots, Wi-Fi 7 and 5G LAN, plus back-connect layout for cleaner cable routing

  • CPU socketAM5
  • ChipsetAMD X870E
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Max supported RAM256 GB
  • Memory channelsDual Channel

CPU +Ryzen 9 9950X

  • Cleaner front view with back-connect design
  • 64MB BIOS enables future CPU compatibility
  • OC Engine with clock generator maximises CPU power
  • Built-in USB 4 port delivers 40Gbps transfer speed
  • Wi-Fi 7 320MHz channel for faster wireless

Combo Core

This bundle pairs an AMD X870E motherboard with a Ryzen 9 9950X processor for AM5 socket builds. The combination targets enthusiasts who want a single validated kit for high-core-count workloads and gaming without separate compatibility checks.

Back Connect Layout

The board moves front-facing headers to the rear panel for a cleaner interior and easier cable routing. This design choice reduces clutter around the CPU socket and graphics card while keeping all I/O accessible from the back of the case.

Platform Foundations

Four DDR5 slots support up to 256 GB in dual channel with CUDIMM clock-driver bypass capability. One PCIe 5.0 x16 slot from the CPU and two CPU-linked M.2 sockets at PCIe 5.0 x4 plus a chipset M.2 at PCIe 4.0 x4 provide high-bandwidth expansion. A 5 Gbps LAN port and Wi-Fi 7 with 320 MHz channels handle networking, while a USB 40 Gbps port and Realtek ALC4080 7.1 audio complete the rear I/O.

How it compares

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

Price $978.99
Pricier than about 87% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMAG X870E TOMAHAWK MAX WIFI PZ+R9 9950X
Model nameMAG X870E TOMAHAWK MAX WIFI PZ+R9 9950X
Processor
CPU socketAM5
ChipsetAMD X870E
Memory
Memory slot count4 × 288pin (DDR5)
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportNon-ECC
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsM.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
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 processors)
- Supports up
Audio & video
Audio chipRealtek ALC4080 Codec
7.1-Channel USB High Performance Audio
Supports up to 32-bit/384 kHz playback on front panel
Supports S/PDIF output
Sound channels7.1 Channels
Connectivity
Maximum network speed5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 5.0 x16 slotsPCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)
PCI_E1 slot
- Supports PCIe 5.0 x16 (For Ryzen 9000/ 7000 Series processors)
- Supports PCIe 4.0 x8 (For Ryzen 8700/ 8600/ 8400 Series processors)
- Supports PCIe 4.0 x4 (For Ryzen 8500/ 8300 Series processor)
PCIe x4 slotsPCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)
PCIe x1 slotsPCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)
Onboard USB headers4 x USB 2.0 ports
4 x USB 5 Gbit/s Type A ports
1 x USB 20 Gbit/s Type C ports
Power
Power connectors1 x Power Connector(ATX_PWR)
2 x Power Connector(CPU_PWR)
1 x Power Connector(PCIE_PWR 8pin)
Size & build
Form factorATX
Width and length12.0 in × 9.6 in

Other versions of this model

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Questions about this item

How does the 16-core Ryzen 9 9950X perform when installed on this X870E board?

The CPU runs at full PCIe 5.0 x16 on the primary slot and drives both CPU-linked M.2 slots at PCIe 5.0 x4, so graphics and the fastest SSDs get the bandwidth the 16-core chip can feed.

What does the USB 40G port actually deliver in daily use?

The built-in USB 4 port runs at 40Gbps, letting you attach high-speed docks, external NVMe enclosures or 8K displays without a separate add-in card.

Will the back-connect layout fit in a standard ATX case without special brackets?

Yes, the board keeps the regular ATX mounting holes and I/O shield; only the front-facing headers move to the rear edge, so it drops into any ATX chassis.

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