MSI MAG B850 GAMING PLUS MAX WIFI motherboard AMD B850 Socket AM5 ATX

The MSI MAG B850 GAMING PLUS provides the foundation for your build — socket, chipset and expansion details are in the spec table below.

MAG B850 GAMING PLUS MAX WIFI
MAG B850 GAMING PLUS MAX WIFI is designed for gamers with a stable, durable and DIY friendly foundation for their PC builds. Coming up with the latest Wi-Fi 7 solution, 5G LAN, USB 10Gbps, PCIe 5.0 solutions, Supplemental PCIe Power, and exclusive EZ DIY features, it's ready for the battlefield of AMD Ryzen™ 9000 series processors.

MSI's mainstream MAG series epitomizes stability and durability and is built to withstand the most intense gaming sessions. The entire lineup features robust construction with metallic-like hardness and excellent heat dissipation, ensuring stability for all critical gaming components.

MSI motherboards are designed with advanced hardware and technology, well-supporting the demanding computing usage of gaming and AI. Moreover, we also introduce AI to MSI Center and BIOS, making everything more effortless than before.

Carefully developed by MSI, allows SSD installation and removal without the need for screws, greatly enhancing convenience.

Unleash and sustain maximum performance with a flagship VRM design built with a total of 12+2+1 digital power phases. Combining dual power connectors and P-PAK Power Stage, MAG B850 GAMING PLUS MAX WIFI is ready for the challenge of high-end processors.

OC Engine is a dedicated chip that enables independent Base Clock (BCLK) control for precise tuning through asynchronous mode in MSI BIOS. It boosts performance by up to 15% while keeping iGPU, memory, PCIe and NVMe stable, giving enthusiasts more headroom for record-breaking overclocks.

MSI utilizes PCB Fabric Technology to enhance signal performance, resulting in higher bandwidth and faster data transfer while minimizing signal loss. The PCB Fabric Technology also offers better impedance control and improved thermal stability, allowing the boards to endure demanding conditions. Due to the high-quality materials used, MSI motherboards are highly reliable and well-suited for the requirements of modern technology.

Extended Heatsink
Extended Heatsink enlarges the surface of heat dissipation and maintain the performance at heavy loads.

EZ M.2 Shield Frozr II
Strengthened M.2 thermal solution helps keep M.2 SSD safe and ensures incredible performance.

Heavy Plated VRM Heatsink
The VRM heatsink covers the upper MOS and helps dissipate the heat.

7W/mK Thermal Pad & Additional Choke Pad
High-quality 7W/mK MOSFET thermal pads and additional choke thermal pads ensure stable performance when all cores are runnging at high speed.

Chipset Heatsink
The heatsink is designed to reduce dust and noise and capable of maintaining high efficiency of heat dissipation.

MSI's premium network solution provides incredible data transfer speed for demanding users.

Wi-Fi 7 is the latest wireless solution that takes a huge leap forward with multiple improvements to meet the traffic demand brought and the growing number of wireless devices.

MSI AI LAN Manager automatically classifies and prioritizes the latency-sensitive applications for online games, giving you the best online gaming experience with low latency.

Specifications

Internal I/O
Number of M.2 (M) slots	3
USB 3.2 Gen 2 (3.1 Gen 2) connectors	1
Total number of SATA connectors	4
Supported storage drive interfaces	M.2, Micro SATA III
USB 2.0 connectors	4
USB 3.2 Gen 1 (3.1 Gen 1) connectors	4
mSATA ports quantity	0
Number of SATA connectors	0
Number of SATA III connectors	4
Number of SATA II connectors	0
CPU fan connector	Yes
RGB LED pin header	Yes
Number of CPU fan connectors	6
Number of water pump connectors	1
Number of RGB LED pin headers	3
Technical details
Motherboard chipset family	AMD
Motherboard chipset	AMD B850
Supported processor sockets	Socket AM5
On-board graphics card	No
Motherboard form factor	ATX
Component for	PC
Audio
Audio output channels	7.1 channels
Performance
Number of HDDs supported	4
Supported storage drive types	HDD & SSD
Windows operating systems supported	Windows 11 x64
RAID levels	0, 1, 10
Processor
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Processor socket	Socket AM5
Memory
Number of memory slots	4
Memory slots type	DIMM
Supported memory types	DDR5-SDRAM
Memory channels	Dual-channel
Supported memory clock speeds	4800,5600,8200,6400 MHz
Maximum internal memory	256 GB
Supported memory clock speed (max)	8200 MHz
ECC ?ompatibility	Non-ECC
Storage controllers
Number of storage drives supported	7
RAID support	Yes
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity	2
DisplayPort version	1.2
USB 2.0 ports quantity	4
VGA (D-Sub) ports quantity	0
HDMI ports quantity	0
Ethernet LAN (RJ-45) ports	1
DVI-D ports quantity	0
DisplayPorts quantity	1
Network
Ethernet LAN	Yes
Wi-Fi	Yes
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be)
Ethernet interface type	5 Gigabit Ethernet
Bluetooth	Yes
Bluetooth version	5.4
Top Wi-Fi standard	Wi-Fi 7 (802.11be)
Features
Audio chip	Realtek ALC897
Product colour	White
Expansion slots
PCI Express x16 (Gen 3.x) slots	1
PCI Express x16 (Gen 4.x) slots	1
PCI Express x16 (Gen 5.x) slots	1
1st M.2 largest key size	2280
1st M.2 highest PCI Express generation	5.0
2nd M.2 largest key size	22110
2nd M.2 highest PCI Express generation	4.0
3rd M.2 largest key size	2280
3rd M.2 highest PCI Express generation	4.0
BIOS
BIOS type	UEFI AMI
BIOS memory size	512 Mbit
ACPI version	6.5
System Management BIOS (SMBIOS) version	3.7
Weight & dimensions
Width	243.8 mm
Depth	304.8 mm

Downloads

• Datasheet (PDF)