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A matte black ATX motherboard with silver heatsinks, four DDR5 slots, a large CPU socket cover

MSI

MSI PRO X870E-P WIFI + Ryzen 9 9900X3D Combo AMD motherboard

SKU CH-JNYT-KWYJ7

Pairs an AMD Ryzen 9 9900X3D processor with an X870E motherboard offering DDR5 8200 MT/s OC, Wi-Fi 7, 5G LAN and PCIe 5.0 x16

  • CPU Socket TypeAM5
  • ChipsetAMD X870E
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardMemory Support DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JED
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel

CPU +Ryzen 9 9900X3D

  • Ready-to-run combo saves build time
  • 60A SPS VRM feeds 12-core CPU cleanly
  • DDR5 up to 8200 MT/s overclock headroom
  • Wi-Fi 7 320 MHz channel hits 5.8 Gbps
  • PCIe 5.0 x16 plus Gen5 M.2 at 128 Gbps

Combo platform

This bundle pairs the MSI PRO X870E-P WIFI motherboard with the AMD Ryzen 9 9900X3D processor on the AM5 socket. The board uses the X870E chipset and supports Ryzen 7000, 8000 and 9000 series CPUs. Four DDR5 slots accept up to 256GB in dual channel mode. It is built for builders who want a ready matched CPU and board.

DDR5 ceiling

Memory overclocking headroom is defined by the CPU and slot population. With one single rank DIMM per channel the board can reach 8200+ MT/s, while two ranks per channel top out at 6400+ MT/s and two populated channels at 5600 MT/s. JEDEC speeds run from 4800 to 5600 MT/s. Choose your kit based on the target frequency and rank layout.

Thermal and power profile

The CPU has a 120W TDP and uses TSMC 4nm Zen 5 architecture with 128MB L3 cache. The motherboard provides a 60A SPS VRM design and Frozr AI Cooling that monitors CPU and GPU temperatures to adjust fan duty automatically. Onboard M.2 Shield Frozr heatsinks cover the three M.2 slots. Radeon graphics are integrated on the processor.

Highlights

  • Ready-to-run combo saves build time
  • 60A SPS VRM feeds 12-core CPU cleanly
  • DDR5 up to 8200 MT/s overclock headroom
  • Wi-Fi 7 320 MHz channel hits 5.8 Gbps
  • PCIe 5.0 x16 plus Gen5 M.2 at 128 Gbps

Specifications

BrandMSI
ModelPRO X870E-P WIFI+R9 9900X3D
Part NumberPRO X870E-P WIFI+R9 9900X3D
CPU Socket TypeAM5
ChipsetAMD X870E
Number of Memory Slots4x288pin (DDR5)
Memory StandardMemory Support DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s
Ryzen™ 9000 Series Processors max. overclocking frequency:
• 1DPC 1R Max speed up to 8200+ 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 6000+ MT/s
Supports AMD POR Speed and JEDEC Speed
Supports Memory Overclocking and AMD EXPOTM
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 overclocking available after boot. Certain
Maximum Memory Supported256GB
Channel SupportedDual Channel
PCI Express 5.0 x16PCI_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 processors)
PCI Express 4.0 x161 x PCI Express 4.0 x16
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)
PCI_E4 Gen PCIe 3.0 supports up to x1 (From Chipset)
Serial ATA (SATA)4 x SATA 6Gb/s
M.21 x M.2 Gen5 x4 128Gbps slots,
2 x M.2 Gen4 x 4 64 Gbps slots,
LAN ChipsetRealtek@ 8126 5G LAN
Wireless LANWi-Fi 7 Solution,
BluetoothBluetooth 5.4
HDMISupport 4K@60Hz as specified in HDMITM 2.1
RJ451 x RJ45
USB 3.12x USB 10Gbps Type-A
1 x USB 5Gbps Type- A
USB 1.1/2.04 x USB 2.0
USB Type-C1 x USB4 port supports USB Type-C display output,
- Requires Processor Graphics
1 x USB 20Gbps Type-C
Audio Ports8-Channel(7.1) HD Audio with Audio Boost.
Form FactorATX

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What does the DDR5 8200+ MT/s overclock figure mean for real-world memory speed?

With a single rank kit in one slot the board can push past 8200 MT/s; two ranks in one slot top out near 6400 MT/s and populating all four slots reduces the ceiling further.

How fast is the Wi-Fi 7 link and what caps it?

The 320 MHz channel enables up to 5.8 Gbps, but actual throughput depends on router capabilities, channel congestion and client hardware support.

What clearance does the 60 A SPS VRM heatsink need for a CPU cooler?

The VRM heatsinks sit close to the AM5 socket; choose a cooler with a cut-out or offset base so it does not contact the VRM fins.

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