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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 Socket TypeAM5
  • ChipsetAMD X870E
  • Number of Memory Slots4x288pin (DDR5)
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel
  • ECC SupportedNon-ECC

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.

Highlights

  • 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

Specifications

BrandMSI
SeriesMAG X870E TOMAHAWK MAX WIFI PZ+R9 9950X
ModelMAG X870E TOMAHAWK MAX WIFI PZ+R9 9950X
CPU Socket TypeAM5
ChipsetAMD X870E
Number of Memory Slots4x288pin (DDR5)
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
Memory FeatureSupports CUDIMM, Clock Driver bypass mode only
PCI Express 5.0 x16PCI_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)
PCI Express x4PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)
PCI Express x1PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)
Serial ATA (SATA)4 x SATA 6Gb/s
M.2M.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
SATA RAIDSupports RAID 0, RAID 1 and RAID 10 for SATA storage devices
Supports RAID 0, RAID 1, RAID 5 and RAID 10 for M.2 NVMe storage devices
*RAID 5 configuration is only supported by Ryzen 9000 series processors.
*RAID 10 for M.2 NVMe storage devices is only supported by Ryzen 9000/7000 series processors.
Audio ChipsetRealtek ALC4080 Codec
7.1-Channel USB High Performance Audio
Supports up to 32-bit/384kHz playback on front panel
Supports S/PDIF output
Audio Channels7.1 Channels
Max LAN Speed5Gbps
Wireless LANWi-Fi 802.11 be
BluetoothBluetooth 5.4
Onboard USB4 x USB 2.0 ports
4 x USB 5Gbps Type A ports
1 x USB 20Gbps Type C ports
Other Connectors1 x CPU Fan
1 x Combo Fan (Pump_Sys Fan)
6 x System Fan
1 x EZ Conn-header (JAF_2)
2 x Front Panel (JFP)
1 x Chassis Intrusion (JCI)
1 x Front Audio (JAUD)
3 x Addressable V2 RGB LED connector (JARGB_V2)
1 x RGB LED connector(JRGB)
1 x TPM pin header(Support TPM 2.0)
2 x Direct OC Jumper (JBCLK)
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x Power Connector(ATX_PWR)
2 x Power Connector(CPU_PWR)
1 x Power Connector(PCIE_PWR 8pin)

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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