MSI MPG MAG B850M MORTAR WIFI

  • Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
  • Supports DDR5 Memory, Dual Channel DDR5 8200+ MT/s (OC)
  • Ultra Performance: 12+2+1 Duet Rail Power System, dual 8-pin CPU power connectors, Core Boost, Memory Boost, 8-layer PCB made by 2oz thickened copper material
  • EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Release and EZ Antenna
  • Lightning Fast Game experience: PCIe 5.0 slot, Lightning Gen 5 x4 M.2, 20G USB Type-C
  • Audio Boost 5: Reward your ears with studio grade sound quality for the most immersive gaming experience
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Specification Details
Chipset AMD B850
CPU Supports AMD Ryzen 9000 / 8000 / 7000 Series Desktop Processors
Socket AM5
Memory
Configuration 4x DDR5 UDIMM, Maximum Memory Capacity 256GB
Memory Support DDR5 8200 – 5600 (OC) MT/s / 5600 – 4800 (JEDEC) MT/s
Ryzen 9000 Series Max Overclocking Frequency 1DPC 1R: Up to 8200+ MT/s
1DPC 2R: Up to 6400+ MT/s
2DPC 1R: Up to 6400+ MT/s
2DPC 2R: Up to 6400+ MT/s
Features Supports AMD POR Speed and JEDEC Speed
Supports Memory Overclocking and AMD EXPO
Supports Dual-Channel mode
Supports Non-ECC, Un-buffered memory
Supports CUDIMM, Clock Driver bypass mode only*
Notes * CUDIMM support and POR boot frequency may vary by CPU series, with manual overclocking available after boot.
– Certain CPUs may fail to boot, but future BIOS updates will improve compatibility.
– The DIMM slots on this motherboard only have single-sided latch.
– Memory compatibility and supported speeds can vary depending on CPU and memory configuration. For detailed information, visit https://www.msi.com/support/.
Onboard Graphics
Ports 1x HDMI
Supports HDMI 2.1 FRL, maximum resolution 8K 60Hz*
*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on CPU installed.
Expansion Slots
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)
PCI_E1 Slot – PCIe 5.0 x16 (Ryzen 9000 / 7000)
– PCIe 4.0 x8 (Ryzen 8700 / 8600 / 8400)
– PCIe 4.0 x4 (Ryzen 8500 / 8300)
Audio
Codec Realtek ALC4080 Codec
Channels 7.1-Channel USB High Performance Audio
Playback Supports up to 32-bit / 384 kHz playback on front panel
Output Supports S/PDIF output
Storage
Configuration 3x M.2
M.2_1 (From CPU): PCIe 5.0 x4, supports 2280/2260 devices
M.2_2 (From CPU): PCIe 5.0 x4, supports 2280/2260 devices
M.2_3 (From Chipset): PCIe 4.0 x2, supports 2280 devices
4x SATA 6G
M.2_1 Slot – PCIe 5.0 x4 (Ryzen 9000 / 7000)
– PCIe 4.0 x4 (Ryzen 8000)
M.2_2 Slot – PCIe 5.0 x4 (Ryzen 9000 / 7000)
– PCIe 4.0 x4 (Ryzen 8700 / 8600 / 8400)
– PCIe 4.0 x2 (Ryzen 8500 / 8300)
M.2_3 Slot – PCIe 4.0 x2
Notes ** Refer to the manual for M.2 SSD heatsink restrictions.
Multi-GPU
Support AMD MULTI-GPU Support
RAID
Support Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices
Supports RAID 0, RAID 1, and RAID 5 for M.2 NVMe storage devices
* RAID 5 supported only on Ryzen 9000 Series processors
USB
Configuration 4x USB 2.0 (Front)
4x USB 5Gbps Type-A (Rear)
2x USB 5Gbps Type-A (Front)
3x USB 10Gbps Type-A (Rear)
1x USB 10Gbps Type-C (Rear)
1x USB 10Gbps Type-C (Front)
1x USB 20Gbps Type-C (Rear)
LAN
Port Realtek 8126-VB 5G LAN
Internal I/O
Connectors 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
Wireless LAN & Bluetooth
Type Wi-Fi 7 Solution
Module Pre-installed in M.2 (Key-E) slot
Performance 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
Notes * 6GHz band support may depend on region; Wi-Fi 7 supported in Windows 11 version 24H2.
** Bluetooth version may be updated; visit chipset vendor’s website for details. Bluetooth 5.4 supported in Windows 11 version 24H2.
LED Features
Indicators 4x EZ Debug LED
1x EZ Memory Detection LED
Back Panel Ports
Configuration

  1. Clear CMOS Button
  2. 5G LAN
  3. USB 10Gbps Type-A
  4. USB 5Gbps Type-A
  5. Audio Connectors
  6. Flash BIOS Button
  7. HDMI
  8. USB 10Gbps Type-A
  9. USB 10Gbps Type-C
  10. USB 20Gbps Type-C
  11. Wi-Fi / Bluetooth
  12. Optical S/PDIF Out
Operating System
Support Windows 11 64-bit
Box Content
INCLUDES
PCB INFO
mATX
243.84mmx243.84mm

Overview

MSI MAG B850M MORTAR WIFI

The MSI MAG B850M MORTAR WIFI is a high-performance Micro-ATX motherboard designed for gamers, streamers, and power users who need reliability, speed, and efficiency in a compact form factor. Built on the AMD B850 chipset, it supports AMD Ryzen™ 9000, 8000, and 7000 Series desktop processors with the AM5 socket, offering cutting-edge technology and long-term platform support.

Power & Performance
Equipped with a 12 + 2 + 1 Duet Rail Power System, the MAG B850M MORTAR WIFI ensures stable and efficient power delivery for high-end CPUs. It supports DDR5 memory up to 256 GB with speeds reaching up to 8400+ MHz (OC), enabling ultra-fast responsiveness and superior multitasking.

Expansion & Storage
The board includes a PCIe 5.0 x16 slot for next-generation GPUs, plus dual M.2 slots—one PCIe 5.0 x4 and one PCIe 4.0 x4—for lightning-fast NVMe SSDs. Multiple SATA 6 Gb/s ports provide ample flexibility for traditional storage devices.

Connectivity
Enjoy seamless networking with Wi-Fi 7 and Bluetooth 5.4, along with a 2.5 Gb LAN port for lag-free wired performance. The rear I/O offers a variety of USB 3.2 Gen 2 and Gen 1 ports, including a USB Type-C, alongside HDMI™ and DisplayPort outputs for integrated graphics support.

Thermal & Design
Engineered for durability and cooling efficiency, the motherboard features extended heatsinks, high-conductivity thermal pads, and M.2 Shield FROZR for maintaining optimal performance during heavy gaming or content creation sessions. Its clean, military-inspired aesthetic with neutral tones complements any build style.

Key Features:

  • Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
  • Supports DDR5 Memory, Dual Channel DDR5 8200+ MT/s (OC)
  • Ultra Performance: 12+2+1 Duet Rail Power System, dual 8-pin CPU power connectors, Core Boost, Memory Boost, 8-layer PCB made by 2oz thickened copper material
  • Frozr Guard: Extended Heatsink, MOSFET thermal pads rated for 7W/mK, additional choke thermal pads and EZ M.2 Shield Frozr II are built for high performance system and non-stop experience
  • EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Release and EZ Antenna
  • Lightning Fast Game experience: PCIe 5.0 slot, Lightning Gen 5 x4 M.2, 20G USB Type-C
  • 5G LAN with Wi-Fi 7 Solution: the latest solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission
  • Audio Boost 5: Reward your ears with studio-grade sound quality for the most immersive gaming experience
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