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
MSI [Your MSI B850 mATX Motherboard Model Name] Specifications
Model
MAG B850M MORTAR WIFI
Chipset & CPU
Chipset
AMD B850
CPU Support
Supports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors
Socket AM5
Memory
DIMM Slots
4x DDR5 UDIMM
Maximum Memory Capacity
256GB
Memory Support (OC)
DDR5 8200 – 5600 MT/s
Memory Support (JEDEC)
DDR5 5600 – 4800 MT/s
Ryzen™ 9000 Series Processors max. overclocking frequency:
1DPC 1R Max speed up to 8200+ MT/s
1DPC 2R Max speed up to 6400+ MT/s
2DPC 1R Max speed up to 6400+ MT/s
2DPC 2R Max speed 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*
* 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 have double-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/.
Onboard Graphics
Video Output
1x HDMI™
HDMI™ Specification
Support HDMI™ 2.1 FRL, maximum resolution of 8K 60Hz*
*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Expansion Slots
PCI-E Slots
1x PCI-E x16 slot
1x PCI-E x4 slot
PCI_E1 (From CPU)
Gen PCIe 5.0 supports up to x16
PCI_E2 (From Chipset)
Gen PCIe 4.0 supports up to x4
PCI_E1 Slot CPU Compatibility
Supports PCIe 5.0 x16 (For Ryzen™ 9000/ 7000 Series processors)
Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processors)
Audio
Audio Codec
Realtek® ALC4080 Codec
Audio Channels
7.1-Channel USB High Performance Audio
Audio Output
Supports up to 32-bit/384kHz playback on front panel
Supports S/PDIF output
Storage & RAID
M.2 Slots
3x M.2
M.2_1 Source (From CPU)
Supports up to PCIe 5.0 x4, supports 2280/2260 devices
M.2_2 Source (From CPU)
Supports up to PCIe 5.0 x4, supports 2280/2260 devices
M.2_3 Source (From Chipset)
Supports up to PCIe 4.0 x2, supports 2280 devices
M.2_1 Slot CPU Compatibility
Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors)
Supports up to PCIe 4.0 x4 (For Ryzen™ 8000 Series processors)
M.2_2 Slot CPU Compatibility
Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors)
Supports up to PCIe 4.0 x4 (For Ryzen™ 8700/ 8600/ 8400 Series processors)
Supports up to PCIe 4.0 x2 (For Ryzen™ 8500/ 8300 Series processors)
M.2_3 Slot Compatibility
Supports up to PCIe 4.0 x2
SATA Ports
4x SATA 6G
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 configuration is only supported by Ryzen™ 9000 series processors.
** Please refer to the manual for M.2 SSD heatsink restrictions.
Multi-GPU Support
Multi-GPU
AMD MULTI-GPU Support
USB
Rear USB
4x USB 5Gbps Type-A
3x USB 10Gbps Type-A
1x USB 10Gbps Type-C
1x USB 20Gbps Type-C
Front USB
4x USB 2.0
2x USB 5Gbps Type-A
1x USB 10Gbps Type-C
Network
LAN
Realtek® 8126-VB 5G LAN
Wireless LAN & Bluetooth
Wi-Fi 7 Solution (Wireless module pre-installed in 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 version 24H2.
** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor’s website for details. Bluetooth 5.4 will be ready in Windows 11 version 24H2.
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