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PC parts / Motherboards

MSI MAG X870E TOMAHAWK WIFI
CPU socket
AM5
Chipset
AMD X870E
Form factor
ATX
M.2 slots
4

68 of 78 fields known.

At a glance

Ports

  • 2 USB-C USB4
  • USB-C USB 3.2 Gen 2
  • 2 USB-A USB 3.2 Gen 2
  • 3 USB-A USB 3.2 Gen 1
  • 4 USB-A USB 2.0
  • HDMI 2.1
  • Ethernet (RJ45)
  • 2 3.5 mm audio
  • Optical S/PDIF
  • USB-C header
  • 2 USB 3 header (19-pin)
  • 2 USB 2.0 header (9-pin)

All specs

SourceCalculated

General

Announced
Not available
Predecessor
Not available
Launch price (US)
Not available
Launch price (EU)
Not available
Markets
Not available
Colours
Not available
Segment
Gaming7Reviewtech4gamers.com/msi-mag-x870e-tomahawk-wifi-reviewRead 15 October 2026The review calls MAG (MSI Arsenal Gaming) MSI's entry-level lineup and the Tomahawk its main arsenal. Tom's Hardware names the Tomahawk and Arsenal Gaming branding on the board.
Board revision
Not available

Platform

Chipset
AMD X870E1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications: AMD X870E Chipset.
Supported processors
AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, CPU: AMD Ryzen 9000, 8000 and 7000 Series Desktop Processors. The manual says to check msi.com for the newest support status. Read on 2026-10-15. BIOS updates can add series later.

Board

Front and side, drawn to scale.

Board dimensions
Width244Height305mm(9.6 × 12 in)2Maker product pagede-store.msi.com/products/mag-x870e-tomahawk-wifiRead 15 October 2026PCB Info: ATX 243.84mm x 304.8mm. The manual prints 9.6 in. x 12 in. (244 mm x 305 mm), and that rounded figure is stored.
Back-connect design
No1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026The Overview of Components chapter shows the usual front-side power, fan and USB connectors. The back-connect design is a separate model, MAG X870E TOMAHAWK MAX WIFI PZ.
RGB lighting on the board
No5Reviewtomshardware.com/reviews/msi-x870e-tomahawk-wifi-motherboard-reviewRead 15 October 2026Page 1: no integrated RGB lighting, only headers.7Reviewtech4gamers.com/msi-mag-x870e-tomahawk-wifi-reviewRead 15 October 2026No onboard RGB, but connectors allow you to connect your own.

Power delivery

Power stage layout
14+2+12Maker product pagede-store.msi.com/products/mag-x870e-tomahawk-wifiRead 15 October 2026Key features: 14+2+1 Duet Rail Power System, dual 8-pin CPU power connectors.
CPU core (Vcore) power stages
145Reviewtomshardware.com/reviews/msi-x870e-tomahawk-wifi-motherboard-reviewRead 15 October 2026Page 1: 17 phases, 14 of which are dedicated to Vcore (14x 80A SPS MOSFETs for Vcore in the spec table).7Reviewtech4gamers.com/msi-mag-x870e-tomahawk-wifi-reviewRead 15 October 2026The board uses a 14+2+1 duet-rail design, with 14x 80A SPS for the CPU Vcore. In this design two stages receive the same signal from the PWM controller.
VRM controller
MPS MPS24125Reviewtomshardware.com/reviews/msi-x870e-tomahawk-wifi-motherboard-reviewRead 15 October 2026Page 1: power goes to a Monolithic Power Systems (MPS) MPS2412 controller, then to the 80A MPS2433 stages. Written MPS MPS2412 like the same chip on other products. Tech4Gamers names MPS MP87670 stages and no controller. MSI does not name the controller.
Extra slot power connector
Yes1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications: 1x 8-pin PCIe power connector (PCIE_PWR1).

Memory

Max memory speed (overclocked)
8,400MT/s2Maker product pagede-store.msi.com/products/mag-x870e-tomahawk-wifiRead 15 October 2026Ryzen 9000 Series processors max. overclocking frequency: 1DPC 1R up to 8400+ MT/s, 1DPC 2R and 2DPC 1R up to 6400+ MT/s and 2DPC 2R up to 4800+ MT/s. The 8400 value is stored. The table also lists DDR5 8400 to 5600 (OC) and 5600 to 4800 (JEDEC).
ECC memory
No1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, Memory: supports Non-ECC, Un-buffered memory.
CUDIMM support
No1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, Memory: supports CUDIMM, Clock Driver bypass mode only.

Expansion slots

Full-length PCIe slots
3
Fastest PCIe x16 slot generation
5

Storage

M.2 storage slots
SlotPCIe generationPCIe lanesConnected toLongest driveTakes SATA drivesHeatsinkShares lanes with
M2_154CPUM.2 22110NoYesNot available
M2_254CPUM.2 2280NoYesRear USB 40Gbps Type-C ports. Both run at PCIe 5.0 x2 when a device is installed in M2_2. Setting M2_2 to x4 in the BIOS turns off the USB 40Gbps Type-C ports
M2_344ChipsetM.2 2280NoYesNot available
M2_444ChipsetM.2 2280NoYesNot available
Source1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, M.2 SSD Slots: M2_1 and M2_2 from the CPU, PCIe 5.0 x4 on Ryzen 9000 and 7000. M2_3 and M2_4 from the X870E chipset, PCIe 4.0 x4. M2_1 takes 2280 and 22110, the others 2260 and 2280. M2_1 is PCIe 4.0 x4 on Ryzen 8000. M2_2 is PCIe 4.0 x4 on Ryzen 8700, 8600 and 8400 and unavailable on Ryzen 8500 and 8300. The USB 40Gbps Type-C ports and M2_2 share PCIe 5.0 x4 bandwidth (footnote). No slot lists an M.2 SATA mode. The M.2 chapter shows heatsinks on all four slots: a screwless M.2 Shield Frozr over M2_1, one screwed heatsink over M2_2 and M2_3, and a screwless one over M2_4.2Maker product pagede-store.msi.com/products/mag-x870e-tomahawk-wifiRead 15 October 2026Storage table: M.2_1 from the CPU (22110/2280), M.2_2 from the CPU (2280/2260), M.2_3 and M.2_4 from the chipset (2280/2260). The USB 40Gbps Type-C ports and M.2_2 share PCIe 5.0 x4 bandwidth.5Reviewtomshardware.com/reviews/msi-x870e-tomahawk-wifi-motherboard-reviewRead 15 October 2026The text confirms two PCIe 5.0 x4 and two PCIe 4.0 x4 sockets and that M2_2 shares bandwidth with the 40 Gbps USB ports. It also says M.2_3 borrows lanes from the bottom PCIe slot and runs at PCIe 4.0 x2. MSI's manual and spec text say M.2_3 supports up to PCIe 4.0 x4, and Tech4Gamers says there is no bandwidth sharing between the PCIe and M.2 slots. The maker's figure is stored and this conflict is not.7Reviewtech4gamers.com/msi-mag-x870e-tomahawk-wifi-reviewRead 15 October 2026All the M.2 slots come with dedicated heatsinks. The top and bottom ones are removed with a push (EZ M.2 Shield Frozr II) and the middle one has four screws. The intro says there is no bandwidth sharing between the PCIe and M.2 slots, which leaves out the maker's USB 40Gbps sharing with M2_2.9Reviewnoticias3d.com/articulo/3856/msi-mag-x870e-tomahawk-wifi-review-rendimiento-precio-mejor-chipset.htmlRead 15 October 2026Review text (Spanish): all four NVMe slots have cooling, and the main slot (22110) has an extra lower thermal pad.
M.2 slots
4
PCIe 5.0 M.2 slots
2
SATA ports
41Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications: 4x SATA 6Gb/s ports (from X870E chipset).

Rear ports

Rear ports
TypeVersionCountMax link rate (Gbps)Thunderbolt or USB4DP Alt Mode
USB-CUSB4240USB4Yes
USB-CUSB 3.2 Gen 2110Not availableNot available
USB-AUSB 3.2 Gen 2210Not availableNot available
USB-AUSB 3.2 Gen 135Not availableNot available
USB-AUSB 2.040.48Not availableNot available
HDMIHDMI 2.11Not availableNot availableNot available
Ethernet (RJ45)Not available15Not availableNot available
3.5 mm audioNot available2Not availableNot availableNot available
Optical S/PDIFNot available1Not availableNot availableNot available
Rear USB ports
12
Rear USB-C ports
3
Fastest rear USB port
40Gbps
Thunderbolt
No

Internal connectors

Internal USB headers
HeaderMax data rate (Gbps)HeadersFront ports servedPower out (W)
USB-C header201127
USB 3 header (19-pin)524Not available
USB 2.0 header (9-pin)0.4824Not available
Front USB-C header speed
20Gbps
Fan headers
81Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, Fan Connectors: 1 CPU fan, 1 pump/system fan and 6 system fan connectors make 8. The JAF_2 EZ Conn-Header V2 carries fan, ARGB and USB 2.0 lines together and is not counted.
ARGB headers
31Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, LED Features: 3x 3-pin A-RAINBOW V2 (ARGB Gen2) LED connectors.
RGB headers
11Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, LED Features: 1x 4-pin RGB LED connector.

Networking

Ethernet controllers
Realtek RTL81261Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications: 1x Realtek 8126 5Gbps LAN controller. Tom's Hardware writes the part as 8126VB. Stored as the chip family RTL8126.5Reviewtomshardware.com/reviews/msi-x870e-tomahawk-wifi-motherboard-reviewRead 15 October 2026Page 1 spec table: Realtek 8126VB (5 GbE).7Reviewtech4gamers.com/msi-mag-x870e-tomahawk-wifi-reviewRead 15 October 2026Spec table: Realtek 8126VB 5G LAN.
Ethernet ports
1
Ethernet speed
5Gbps
Max Wi-Fi channel width
320MHz1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications: 320MHz on the 6GHz band, up to 5.8Gbps.
Wi-Fi module
Not available

Audio

DAC chip
Not available

Features

BIOS flashback
Yes1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Back panel list: Flash BIOS button.
Clear CMOS button (rear)
Yes1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Back panel list: Clear CMOS button. The jumper JBAT1 is not what is stored.
Power button on the board
No1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026The Overview of Components and Onboard LEDs chapters list no power or start button on the board. The rear Clear CMOS and Flash BIOS buttons and the EZ PCIe Release button are the only buttons.
Dual BIOS
No1Owner's manualtrovaprezzi.it/manuali/msi_mag_x870e_tomahawk_wifi.pdfRead 15 October 2026Specifications, BIOS Features: 1x 256 Mb flash. No second BIOS is listed.

Measured

Power draw CPU stress
264W6Measurementtomshardware.com/reviews/msi-x870e-tomahawk-wifi-motherboard-review/3Read 15 October 2026Page 3 Power Consumption chart, MSI X870E Tomahawk Wifi: load 264 W peak (average 172 W) in the AIDA64 System Stability Test with CPU, FPU, cache and memory stressed. Whole PC at the wall with a Kill-A-Watt meter, Ryzen 9 9900X at stock settings, graphics card not loaded.

In the box

Warranty

Manufacturer warranty (source market)
3years3Maker product pageuk-store.msi.com/products/mag-x870e-tomahawk-wifiRead 15 October 2026Warranty: 3-year warranty.5Reviewtomshardware.com/reviews/msi-x870e-tomahawk-wifi-motherboard-reviewRead 15 October 2026Spec table: Warranty 3 Years.7Reviewtech4gamers.com/msi-mag-x870e-tomahawk-wifi-reviewRead 15 October 2026Pros and spec notes: warranty 3 years.10Retailer pageamazon.com/dp/B0DT55ZJM7Read 15 October 2026Warranty Description: 3 Year Manufacturer.

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Sources

We read 13 sources for this motherboard. The numbers match the markers in the sheet.

  1. Read 15 October 2026Backs 37 fields
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  8. Read 15 October 2026Backs 1 field
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  10. Read 15 October 2026Backs 5 fields
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