Skip to content

MSI · LGA 1851 · B860M

MAG B860M Mortar WiFi

Micro-ATX · DDR5 · 4 DIMMs · 12-phase VRM · 7

Quality
60
VRM
37
Value
72
Amazon
$160
MAG B860M Mortar WiFi
View MAG B860M Mortar WiFi Gallery in high resolution
$160
Unavailable Updated 1 month, 1 week ago Prime FBA
Overall60.4
VRM37.0
Chipset80.0
Expansion / storage66.0
Connectivity76.0
Audio43.0
Quality / price71.7
$160 on Amazon Motherboard table Compare this motherboard

Build with this motherboardSelect a CPU first so the Builder can confirm the socket and unlock this board. Choose the CPU first

Written analysis

MAG B860M Mortar WiFi at a glance

The MAG B860M Mortar WiFi uses the Micro-ATX form factor, LGA 1851 socket, and B860M chipset. This is a balanced mainstream platform: enough expansion and connectivity for a performance PC without paying only for flagship extras.

Memory support is DDR5 across 4 DIMM slots, with up to 256 GB and rated overclocked speeds up to 9200 MT/s. XMP / EXPO memory-profile support is recorded for easier tuning.

Best fit: a performance gaming and productivity PC that needs a balanced board without workstation-class excess.

Power delivery

The calculated VRM score is 37.0, placing the power delivery in the entry-level class. The board lists 12 CPU power phases, 60 A power stages in a 12+1+1+1 layout. CPU power input is listed as 2. It is best paired with mainstream 65–105 W-class processors and good case airflow.

Expansion and storage

The expansion and storage score is 66.0: balanced . The platform supports PCIe 5.0. Physical expansion includes 1 ×16 slot, 1 ×4.

On-board storage consists of 3 M.2 slots and 4 SATA ports. Supported M.2 lengths are listed as 2280, 2260, 2242. That is enough NVMe capacity for a multi-drive gaming or creator setup without immediately relying on an add-in card.

Connectivity and rear I/O

The connectivity score is 76.0, rated strong . Wireless networking is Wi-Fi 7 ; wired networking is Intel® Killer™ E5000 5Gbps LAN at up to 5000 Mbps. Bluetooth 5.4 is included. The recorded USB provision is 9 rear connections and 7 front-panel connections. USB4 Type-C is available at the rear. The specification sheet below separates every USB speed and connector type.

Display connectivity includes HDMI 2.1, DisplayPort 1.4, USB-C DisplayPort. These motherboard outputs require a processor with integrated graphics.

Audio

The audio score is 43.0. This is a standard onboard solution using Realtek® ALC897 Codec. It covers normal gaming and communication; demanding headphones or production work still benefit from an external interface. Optical S/PDIF is present for digital audio equipment.

Buying verdict

Overall quality is 60.40, a mainstream result. The essential platform features are covered, while premium I/O and tuning extras are more selective.

At the recorded Amazon price, the quality-to-price score is 71.7—an excellent value relative to the other boards in the catalog.

Board data

Full specifications

Platform, expansion, storage, rear I/O, internal headers, networking, audio, and board controls in one sheet.

General

Manufacturer
MSI
Motherboard
MAG B860M Mortar WiFi
Chipset / socket
B860M / LGA 1851
Form factor
Micro-ATX
Launch price
—
Amazon price
$160
Availability
Unavailable
Price updated
1 month, 1 week ago

VRM

CPU phases
12 (60 A)
Power design
12+1+1+1
EPS connector
2

Memory

Type / slots
DDR5 / 4 DIMMs
Max capacity / OC
256 GB / 9200 MT/s
Per DIMM
64 GB
XMP / EXPO
Yes

PCIe

Supported version
PCIe 5.0
x16 physical
1
x16 Gen 5
1
x4 physical
1
x4 Gen 4
1

Storage

M.2 slots
3
M.2 lengths
2280, 2260, 2242
SATA ports
4

Display outputs

HDMI
Yes · 2.1 · 8K 60Hz
DisplayPort
Yes · 1.4 · 4K 60Hz
USB-C DisplayPort
Yes · 2.1 · 4K@120Hz / 8K@60Hz

USB

Rear USB 2.0
4
Rear USB 3.2 Gen 2 Type-A 10 Gbps
3
Rear USB 3.2 Gen 2 Type-C 10 Gbps
1
Rear USB4 Type-C
1
Front USB 2.0
4
Front USB 3.2 Gen 1 Type-A 5 Gbps
2
Front USB 3.2 Gen 2 Type-C 10 Gbps
1
Header USB 2.0
4
Header USB 3.2 Gen 1 Type-A 5 Gbps
2
Header USB 3.2 Gen 2 Type-A 10 Gbps
1
USB4
Type-C · rear

Networking

Ethernet
Intel® Killer™ E5000 5Gbps LAN
LAN ports
1
LAN speed
5000 Mbps
Wi-Fi
7
Wi-Fi bandwidth
320MHz
Bands
2.4GHz, 5GHz, 6GHz
Bluetooth
5.4

Audio

Chipset
Realtek® ALC897 Codec
Analog jacks
—
Gold-plated jacks
No
Optical S/PDIF
Yes
Spatial audio
Rear output

Buttons

BIOS flashback
Yes
Clear CMOS
Yes
Q-Flash Plus
No
Smart button
No
Onboard start / reset
No

Additional information

Memory notes
Supports DDR5 UDIMM, Un-buffered memory, and CUDIMM. Max overclocking frequency varies by configuration: 1DPC 1R up to 9200+ MT/s, 1DPC 2R up to 7200+ MT/s, 2DPC 1R up to 6400+ MT/s, and 2DPC 2R up to 5600+ MT/s. Supports Intel® POR and JEDEC speeds. The DIMM slots have single-sided latches. Memory compatibility and supported speeds can vary depending on the CPU and memory configuration.
Display notes
The Type-C DisplayPort is provided via Thunderbolt™ 4 ports and supports UHBR20. HDMI™ 2.1 supports FRL. Video outputs are available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Expansion notes
PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU). PCI_E2 Gen PCIe 4.0 supports up to x4 (From Chipset).
M.2_1
5.0 4 · 2280, 2260, 2242 · From CPU
M.2_2
4.0 4 · 2280, 2260 · From Chipset
M.2_3
4.0 4 · 2280, 2260 · From Chipset
Storage notes
Please refer to the manual for M.2 SSD heatsink restrictions.
USB notes
Includes one internal Thunderbolt 5 card connector (JTBT5).
Audio notes
7.1-Channel High Definition Audio
Networking notes
Wi-Fi module: Intel Killer BE1750x. The Wireless module is pre-installed in the M.2 (Key-E) slot. Supports MU-MIMO TX/RX, up to 5.8Gbps. Supports 802.11 a/ b/ g/ n/ ac/ ax/ be. Bluetooth supports MLO, 4KQAM. 6GHz band support may depend on every country’s regulations and Wi-Fi 7 will be ready in Windows 11 SV3. The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor's website for details. Bluetooth 5.4 support schedule depends on MSFT Windows 11 plan.
Fan / RGB headers
1 CPU · — OPT · 1 AIO · 4 chassis · 3 ARGB · 1 RGB
Other headers
Front audio · System panel · TPM · Thunderbolt
Dimensions
24.4cm x 24.4cm

Extracted notes sit here. Official manufacturer copy is at the bottom of the page.

Amazon

Price history

Nearby quality

Similar motherboards

Boards on LGA 1851 close to MAG B860M Mortar WiFi on overall quality. Open the motherboard table to sort, filter, and compare side by side.

Compare these in the motherboard table

VRM fit

VRM-appropriate CPUs

LGA 1851 processors whose TDP sits in this board’s VRM window. Socket match is required; chipset extras still matter on sTR5. This is a power-delivery filter, not a ranked CPU guide.

Open LGA 1851 CPUs in the CPU table

Discussion

Comments on MAG B860M Mortar WiFi

No comments yet.

Vendor copy

Official manufacturer data

Raw manufacturer text kept for reference. Structured specs above are extracted from this copy and are the source for scores and tables.

Memory

4x DDR5 UDIMM, Maximum Memory Capacity 256GB
Memory Support 9200 - 6400 (OC) MT/s / 6400 - 4800 (JEDEC) MT/s
Max. overclocking frequency:
• 1DPC 1R Max speed up to 9200+ MT/s
• 1DPC 2R Max speed up to 7200+ MT/s
• 2DPC 1R Max speed up to 6400+ MT/s
• 2DPC 2R Max speed up to 5600+ MT/s

Supports Intel® POR Speed and JEDEC Speed
Supports Memory Overclocking and Intel® XMP 3.0
Supports Dual-Controller Dual-Channel mode
Supports Non-ECC, Un-buffered memory
Supports CUDIMM
* The DIMM slots on this motherboard only have single-sided latches. ** Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit https://www.msi.com/support/.

Graphics

1x HDMI™
Support HDMI™ 2.1 with FRL, maximum resolution of 8K 60Hz*/ **
1x DisplayPort
Support DisplayPort 1.4, maximum resolution of 4K 60Hz*/ **
1x Type-C DisplayPort
Thunderbolt™ 4 ports, supporting DisplayPort 2.1 with UHBR20 over USB Type-C, with a maximum resolution of 4K@120Hz / 8K@60Hz*
*Available only on processors featuring integrated graphics.
** Graphics specifications may vary depending on the CPU installed.

Expansion slots

1x PCI-E x16 slot
1x PCI-E x4 slot
PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)
PCI_E2 Gen PCIe 4.0 supports up to x4 (From Chipset)

Storage

3x M.2
M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260/2242 devices
M.2_2 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
M.2_3 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
4x SATA 6G

**Please refer to the manual for M.2 SSD heatsink restrictions.

USB

4x USB 2.0 (Rear)
4x USB 2.0 (Front)
2x USB 5Gbps Type A (Front)
3x USB 10Gbps Type A (Rear)
1x USB 10Gbps Type C (Rear)
1x USB 10Gbps Type C (Front)

Internal I/O

1x Thunderbolt5 card connector(JTBT5, support RTD3)
1x Power Connector(ATX_PWR)
2x Power Connector(CPU_PWR)
1x Power Connector(PCIE_PWR 8pin)
1x CPU Fan
1x Combo Fan (Pump_Sys Fan)
4x System Fan
1x EZ Conn-header (JAF_1)
2x Front Panel (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
1x Tuning Controller connector(JDASH)
3x Addressable V2 RGB LED connector (JARGB_V2)
1x RGB LED connector(JRGB)
1x TPM pin header(Support TPM 2.0)
4x USB 2.0 ports
2x USB 5Gbps Type A ports
1x USB 10Gbps Type C ports

Rear I/O

DisplayPort
USB 2.0
USB 10Gbps Type-A
5G LAN
Wi-Fi / Bluetooth
Audio Connectors
HDMI™
Thunderbolt™ 4 40Gbps (Type-C)
Flash BIOS Button
Clear CMOS Button
USB 10Gbps Type-C
USB 10Gbps Type-A
S/PDIF-OUT

Wireless

Intel® Killer™ BE1750x Wi-Fi 7
The Wireless module is pre-installed in the M.2 (Key-E) slot
Supports MU-MIMO TX/RX, 2.4GHz / 5GHz / 6GHz* (320MHz) up to 5.8Gbps
Supports 802.11 a/ b/ g/ n/ ac/ ax/ be

Supports Bluetooth® 5.4**, MLO, 4KQAM

* 6GHz band support may depend on every country’s regulations and Wi-Fi 7 will be ready in Windows 11 SV3.
** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor's website for details. Bluetooth 5.4 support schedule depends on MSFT Windows 11 plan.

Audio

Realtek® ALC897 Codec
7.1-Channel High Definition Audio
Supports S/PDIF output

Privacy controls

Choose whether optional analytics may run. Necessary storage remains active because it supports security, login, requested preferences, and this choice.

Necessary Security, sessions, forms, and preferences you request.
Always active