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THE ACTUAL PRODUCT
MSI MAG X870E TOMAHAWK WIFI motherboard, top view of the exact global model; CPU and memory are not installed
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MSI MAG X870E TOMAHAWK WIFI

AM5 · ATX · DDR5 · board-only configuration · MSI global specification

ATX motherboard for supported AM5 processors, with 4 DDR5 slots and 4 onboard M.2 storage positions. Realtek RTL8126 5 Gb Ethernet; Wi-Fi 7; Bluetooth 5.4.

Reviewed 7 Sept 2026Manufacturer specifications, not a hands-on test.
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WHAT IT BRINGS

The useful part.

Provides four onboard M.2 positions, including two chipset PCIe 4.0 x4 links, plus 5 Gb Ethernet.

BEFORE YOU CHOOSE

The checks that matter.

M2_2 shares CPU lanes with rear USB4 and is unavailable with Ryzen 8500/8300; the X870E and X870 variants have different chipset M.2 links.

NOTHING HIDDEN IN THE SMALL PRINT

Every specification.
With its source.

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CPU socket
AM5
Conditions & context

Manufacturer specification · Match the exact CPU and required BIOS as well as the physical socket.

Chipset
AMD X870E
Conditions & context

Manufacturer specification

Form factor
ATX: 304.8 × 243.84 mm
Conditions & context

Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing.

Memory type, slots and limit
4 DDR5 DIMM slots; up to 256 GB; dual-channel unbuffered memory; AMD EXPO
Conditions & context

Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR5 slots require DDR5 modules; DDR4 and DDR5 are not interchangeable. CUDIMM support is bypass mode only; compatibility depends on CPU and BIOS, and some combinations may not boot. Check the exact memory support list.

Storage interfaces
M2_1 and M2_2: CPU PCIe 5.0 x4; M2_3 and M2_4: chipset PCIe 4.0 x4; 4 SATA 6 Gb/s ports
Conditions & context

Manufacturer specification · Ryzen 8000 uses PCIe 4.0 for CPU M.2 links; M2_2 is unavailable with Ryzen 8500/8300. M2_2 and the rear USB4 controller share CPU PCIe 5.0 x4 lanes. With M2_2 populated, each runs at x2; selecting M2_2 x4 in BIOS disables rear USB4. The USB4 controller itself supports at most PCIe 4.0 x4.

Network interfaces
Realtek RTL8126 5 Gb Ethernet; Wi-Fi 7; Bluetooth 5.4
Conditions & context

Manufacturer specification · Wi-Fi 7 requires supported Windows 11, drivers and access point; MSI specifies Windows 11 24H2 for full Wi-Fi 7 operation. 6 GHz availability depends on country rules. Bluetooth version depends on module vendor and drivers; no measured throughput is claimed.

CPU support / BIOS source
MSI lists Ryzen 9000 / 8000 / 7000 desktop processors. Check the exact CPU support list and required BIOS before purchase; a socket match alone does not establish out-of-box compatibility.
Conditions & context

Manufacturer specification

Maximum listed memory
256 GB
Conditions & context

Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR5 slots require DDR5 modules; DDR4 and DDR5 are not interchangeable. CUDIMM support is bypass mode only; compatibility depends on CPU and BIOS, and some combinations may not boot. Check the exact memory support list.

DIMM slots
4
Conditions & context

Manufacturer specification · Physical DDR5 module positions, not included modules. Consult the board manual for population order and compatible capacities.

Onboard M.2 storage slots
4
Conditions & context

Manufacturer specification · Onboard M.2 storage positions only. Ryzen 8000 uses PCIe 4.0 for CPU M.2 links; M2_2 is unavailable with Ryzen 8500/8300. M2_2 and the rear USB4 controller share CPU PCIe 5.0 x4 lanes. With M2_2 populated, each runs at x2; selecting M2_2 x4 in BIOS disables rear USB4. The USB4 controller itself supports at most PCIe 4.0 x4.

SATA storage ports
4
Conditions & context

Manufacturer specification · SATA 6 Gb/s connectors, not supplied drives or power cables. Ryzen 8000 uses PCIe 4.0 for CPU M.2 links; M2_2 is unavailable with Ryzen 8500/8300. M2_2 and the rear USB4 controller share CPU PCIe 5.0 x4 lanes. With M2_2 populated, each runs at x2; selecting M2_2 x4 in BIOS disables rear USB4. The USB4 controller itself supports at most PCIe 4.0 x4.

Onboard audio hardware
Realtek ALC4080
Conditions & context

Manufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised.

PUT IT IN PERSPECTIVE

A choice needs a contender.

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