MSI MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5
MSI MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5, photo 2
MSI MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5, photo 3
MSI MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5, photo 4
MSI MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5, photo 5
MSI MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5, photo 6
MSI

MSI MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5

SKU HC-433949MPN 7E39-001R

  • LGA1851
  • B860
  • ATX

Highlights

  • Intel B860 chipset for LGA 1851 Arrow Lake CPUs
  • DDR5 support up to 9200 MT/s overclocked across 4 DIMM slots
  • PCIe 5.0 x16 slot and one PCIe 5.0 M.2 slot
  • Wi-Fi 7 and Bluetooth 5.4 with Intel Killer BE1750x
  • 5 Gbps LAN via Intel Killer E5000 controller
  • Thunderbolt 4 port plus extensive USB 3.1 and USB 2.0 connectivity

Key specs

Socket
LGA1851
Chipset
B860
Form factor
ATX
Memory
DDR5
Wi-Fi
Yes
CPU Socket
1851
All specifications
$189.99
  • ≈ 0.002463 BTC
  • ≈ 0.08297 ETH
  • ≈ 190.18 USDT

In stock Ships by Tue, Nov 10 when paid today.

  • Delivery to the United States: $39.90 DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today
  • Rate locked at checkout Up to 60 min to send BTC, 30 min for ETH and USDT
  • New, sealed and genuine Manufacturer warranty: 3 years
  • 30-day returns Unused items in original packaging
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Overview

An ATX motherboard built on the Intel B860 chipset for LGA 1851 processors. It targets gamers and builders who want PCIe 5.0 and high-speed DDR5 without CPU overclocking.

Board Layout and Cooling

The ATX form factor measures 304.8 mm by 243.8 mm in a black finish. It includes VRM heatsinks, M.2 shields, a rear I/O backplate, and seven 4-pin PWM fan headers for air or liquid cooling setups.

Memory and Expansion

Four DIMM slots accept up to 256 GB of DDR5 CUDIMM or UDIMM modules. Standard speed reaches 6400 MT/s with XMP 3.0 profiles enabling up to 9200 MT/s. Expansion includes one PCIe 5.0 x16 slot, one PCIe 4.0 x16 slot running at x4, and one PCIe 4.0 x1 slot.

Storage and Connectivity

Three M.2 sockets provide one PCIe 5.0 x4 and two PCIe 4.0 x4 connections alongside four SATA 6 Gbps ports. External I/O features Thunderbolt 4, one USB 3.1 Type-C, four USB 3.1 Type-A, four USB 2.0 Type-A, HDMI, DisplayPort, and 5 Gbps Ethernet.

Wireless and Audio

Intel Killer BE1750x delivers Wi-Fi 7 and Bluetooth 5.4. The Realtek ALC897 codec handles audio output. RGB lighting is supported through two 12 V 4-pin and three 5 V 3-pin addressable headers.

MAG B860 Tomahawk WiFi Motherboard LGA 1851 ATX DDR5 specifications

General
BrandMSI
Manufacturer part no.7E39-001R
EAN4711377279642
Warranty3 years (manufacturer)
Form Factor
Motherboard Form FactorATX
CPU
CPU ManufacturerIntel
CPU Socket1851
Motherboard
Motherboard ChipsetIntel B860
Memory
Max. Memory256 GB
Memory TypeDDR5
Memory Form FactorDIMM
System Memory SubtypeCUDIMM, UDIMM
Max. Memory Speed (Standard)6400 MT/s
Max. Memory Speed (OC)9200 MT/s
ECC SupportNo
Memory slots4x
Performance ProfileIntel XMP 3.0
Wi-Fi & LAN
LANYes
LAN Ports1x 5 Gbit/s
LAN ChipIntel Killer E5000
Wi-Fi / BluetoothYes
Wi-Fi StandardWi-Fi 7
Bluetooth Standard5.4
Wi-Fi ChipIntel Killer BE1750x
Cooling
BackplateYes
M.2 HeatsinksYes
VRM HeatsinksYes
Internal Ports
CPU Power Supply2x 8-Pin
USB 3.0 / 3.1 / 3.2 (internal) Type C Header1
USB 3.0 / 3.1 / 3.2 (internal) Type C Possible Ports1
USB 3.0 (internal) Header1
Internal Ports (continued)
USB 3.0 (internal) Possible Ports2
USB 2.0 (internal) Header2
USB 2.0 (internal) Possible Ports4
RGB / LED connectors2x RGB (4-Pin 5050 12VGRB), 3x Digital RGB (3-Pin 5VDG)
SPI TPM HeaderYes
External Ports
USB4 Gen 3x2 (external) Type C1
USB 3.1 (external) Type C1
USB 3.1 (external) Type A4
USB 2.0 (external) Type A4
Display ConnectorsDisplayPort (1x), HDMI (1x), USB Type C (Display Port shared) (1x)
Storage Ports
M.2 PCIe 4.0 x4 & SATA 6G2
M.2 PCIe 5.0 x41
SATA 6G (internal)4
Expansion Slots
PCIe x16 slots (total)2
PCIe x4 slots (total)1
PCIe x1 slots (total)1
PCIe 5.0 x16 mechanical slot1
PCIe 4.0 x16 mechanical slot1
PCIe 4.0 x1 mechanical slot1
Fan Header
4 Pin Fan Connectors7
Audio
SoundchipRealtek ALC897
Back Connect
Back ConnectNo
Water Cooling
WatercoolingYes
Lighting
Lighting / RGBYes
Lighting ColorRGB
Color
Primary ColorBlack
Dimensions
Length / Depth243.8 mm
Width304.8 mm

Specifications come from the manufacturer and can change without notice. Check the box contents and compatibility before ordering; our team answers questions within one business day.

Shipping & returns

Delivery to the United States: $39.90DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today

Ships from our warehouse in Germany: in stock, it leaves within 1–2 business days, tracked to the door.
ToBusiness daysThis item
GermanyDHL Paket1–2Free
Other EU countriesDHL Parcel International2–8$11.90–$15.90
UK, Switzerland and NorwayDHL Parcel International3–7$24.90
United States and CanadaDHL Express Worldwide2–5$39.90
Asia and the Middle EastDHL Express Worldwide2–5$49.90
Australia and New ZealandDHL Express Worldwide3–6$59.90
  • Discreet packaging Plain, unbranded box — no crypto or brand references outside
  • Returns 30 days for unused items in original packaging; faulty items are on us
Rates and delivery times by country

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