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MSI PRO X870-P WIFI motherboard and manufacturer packaging with the exact model name visible
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MSI PRO X870-P WIFI

AM5 · DDR5 · ATX · MSI global specification

An ATX AM5 motherboard using AMD X870, with four DDR5 slots, 3 M.2 storage positions and 4 SATA connectors.

Reviewed 8 Sept 2026Manufacturer specifications, not a hands-on test.
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Ryzen 8000 reduces the first M.2 link to PCIe 4.0. Populating M2_3 reduces PCI_E4 to x2; AM5 alone does not establish every lane configuration.

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CPU socket
AM5
Conditions & context

Manufacturer specification

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Chipset
AMD X870
Conditions & context

Manufacturer specification

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Form factor
ATX; 304.8 × 243.84 mm
Conditions & context

Manufacturer specification

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Memory type, slots and limit
4 DDR5 DIMM slots; up to 256 GB; dual channel
Conditions & context

Manufacturer specification · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable.

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Storage interfaces
1 × M.2 up to PCIe 5.0 x4; 1 × M.2 PCIe 4.0 x4; 1 × M.2 PCIe 4.0 x2; 4 × SATA 6 Gb/s
Conditions & context

Manufacturer specification · M2_1 is PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000. Populating M2_3 reduces PCI_E4 to x2. Primary graphics lanes also depend on CPU.

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Network interfaces
Realtek 8126 5 Gb Ethernet; Wi-Fi 7; Bluetooth 5.4
Conditions & context

Manufacturer specification · Wireless features require compatible OS, driver and router. 6 GHz availability depends on regional rules.

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CPU support / BIOS source
Manufacturer lists AMD Ryzen 9000, 8000 and 7000 series. Check the exact CPU support entry and required BIOS before purchase.
Conditions & context

Manufacturer specification · A supported family and socket do not guarantee out-of-box support for every CPU stepping or BIOS version.

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Maximum listed memory
256 GB
Conditions & context

Manufacturer specification · Manufacturer capacity ceiling; CPU, BIOS and module validation apply.

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DIMM slots
4
Conditions & context

Manufacturer specification · Physical DDR5 DIMM positions; not a capacity or speed guarantee.

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M.2 storage slots
3
Conditions & context

Manufacturer specification · M2_1 is PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000. Populating M2_3 reduces PCI_E4 to x2. Primary graphics lanes also depend on CPU.

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SATA ports
4
Conditions & context

Manufacturer specification · M2_1 is PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000. Populating M2_3 reduces PCI_E4 to x2. Primary graphics lanes also depend on CPU.

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Expansion slots and electrical links
Primary slot up to PCIe 5.0 x16; PCIe 4.0 x4 secondary slot; 2 × PCIe 3.0 x1
Conditions & context

Manufacturer specification · Electrical link widths, not a guarantee of the installed system’s performance.

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Lane-sharing restrictions
M2_1 is PCIe 5.0 x4 with Ryzen 9000/7000 and PCIe 4.0 x4 with Ryzen 8000. Populating M2_3 reduces PCI_E4 to x2. Primary graphics lanes also depend on CPU.
Conditions & context

Manufacturer specification · Exact manufacturer restrictions; inspect the complete manual when planning simultaneous devices.

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