MSI MAG B850M MORTAR

MAG B850M MORTAR is designed for gamers with a stable, durable and DIY friendly foundation for their PC builds. Coming up with 5G LAN, USB 20Gbps, 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 MAG B850M MORTAR KV
icon ez diy

Less steps, control easily

icon ultra power

12+2+1 Duet Rail Power System 60A SPS

icon frozr design

Extended Heatsink Design
EZ M.2 Shield Frozr II

icon connect

USB20G Type-C connection & 5G LAN

icon ez oc

Easy One-Click overclock

icon click bios x

New and Optimized UI / UX design

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.

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msi MAG B850M MORTAR with msi Componets
EXCLUSIVE FEATURES
THERMAL SOLUTION
CONNECTIVITY

EXCLUSIVE FEATURES

MSI MAG B850M MORTAR Exclusive
Pre-Installed I/O Shield icon

Pre-Installed I/O Shield

Double-sided M.2 Shield Frozr

EZ M.2 Shield Frozr II

EZ Conn Design

EZ Conn Design

pwm icon

12+2+1 Duet Rail Power System with 60A SPS

EZ PCIe Release icon

EZ PCIe Release

Enlarged Chipset Heatsink

Steel Armor II

steel armor icon

PCIe Supplemental Power

Premium thermal solution

MSI MAG B850M MORTAR hero Thermal
Pre-installed I/O Shield

Extended Heatsink

icon gray8 layer PCB  icon-20z

8-Layer PCB
with 2oz Thickened Copper

EZ Conn Design

Pump Fan Support

Heatsink with 7W/mK Thermal Pad icon

Heatsink with 7W/mK Thermal Pad

HIGH-SPEED TRANSMISSION

Msi MAG B850M MORTAR Connectivity
5G LAN

5G LAN

2.5G LAN

USB 20G

Lightning Gen 5 PCI-E

2x PCIe 5.0 M.2 Slots

Latest DDR5 Memory

Memory Boost

Lightning Gen 5 PCI-E

Lightning Gen 5

EZ DIY

EZ DIY
  • ONE-FINGER
  • ONE HAND
  • ONE STEP
  • ONE GLANCE
  • ONE CLICK
  • EZ M.2 INSTALLATION
  • EZ GPU INSTALLATION
  • EZ BUTTON

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

EZ M.2 INSTALLATION
EZ M.2 CLIP II REMOVER

MSI’s exclusive EZ M.2 Shield Frozr II and EZ M.2 CLIP II make M.2 installation seamless. Insert the SSD card into the slot and press it down to lock it in place with the clip. As fasten the SSD, flick the clip outwards and then the SSD is removed. The process is smooth, and you don’t need to use your tools like before. One finger can give you perfect DIY experience.

Introducing MSI’s EZ M.2 CLIP II Remover, a handy tool designed to simply switching or repositioning the EZ M.2 CLIP II on your motherboard. This tool allows users to effortlessly detach the EZ M.2 CLIP II from the motherboard and reattach it to any desired M.2 slot. It is included in the accessory kit that comes with MSI motherboards.

EZ M.2 CLIP II REMOVER

An easy-to-access physical button release mechanism that can help remove any PCIe card with a single tap, making it much easier to upgrade to a new GPU or other compatible device, streamlining the entire process and enhancing user experience.

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MORE FOR DIY FRIENDLY

Flash BIOS Button
Clear CMOS Button
Flash BIOS Button
Flash the BIOS with only a connected power supply by following a few steps.
CPU and memory not required. Leam more
Clear CMOS Button
Restore the BIOS to the default settings – helpful in 99% of the cases to successfully boot again.
  • EZ Mounting

EZ MOUNTING

MSI motherboards circuitry ensure the case standoff keep out zones are pure and clean. Moreover, the protective paint is printed around each screw hole to prevent parts from being scratched or damaged to the motherboard.

Avoid Collision Notification

Keep Out Zone

Double ESD Protection

  • EZ Conn-Design
  • EZ Front Panel Cable
  • DRIVER UTILITY INSTALLER

EZ Conn-Design (JAF_1)

The MSI exclusive JAF_1 header allows MPG EZ120 ARGB fan to operate with a single cable. Alternatively, the JAF_1 header can be converted into additional ARGB Gen 1 and fan headers by using a dedicated 1-to-2 EZ Conn-cable, streamlining and optimizing the entire building process.

Additional FAN & ARGB Header
Additional ARGB Header
Additional ARGB header
Additional FAN Header
Additional FAN header
mpg f120 argb

This cable takes care of the tedious part of the build process, makes motherboard front panel connections quickly and accurately.

EZ Front Panel Cable

MSI DRIVER UTILITY INSTALLER

Once connected to the internet, MSI Driver Utility Installer will detect and present suitable drivers and utilities automatically, you can download and install with just a few clicks. Learn more

*Please ensure to connect the internet, or the Driver Utility Installer won’t launch automatically.
*MSI Driver Utility Installer will be ready in Windows 11 build 22H2.

MSI DRIVER UTILITY INSTALLER (DUI)
  • EZ DEBUG
EZ DEBUG LED

EZ DEBUG LED

Onboard LEDs will indicate the source of the problem so you know exactly where to look to get up and running again.

EZ MEMORY DETECTION LED

EZ MEMORY DETECTION LED

This LED lights up when it detects faulty memory in slots, eliminating guesswork from troubleshooting.

  • EZ OVERCLOCKING
  • EZ Optimization

EZ Ooverclocking

While overclocking can be overly complex for some, MSI Click BIOS X made it more accessible with multiple one-click overclock features for both processor and memory, allowing users to easily enhance system performance without delving into intricate settings.

  • cpu

    GAME BOOST

    One-click CPU overclock automatically optimizes your CPU performance, instantly tuning it to the best possible level.

  • npu

    AI BOOST

    An intelligent algorithm boosts NPU performance to get the best possible AI performance when you need additional horsepower.
    *Enabled with compatible processors.

  • memory

    EXPO / A-XMP

    Choose from preset EXPO and A-XMP profiles to automatically overclock compatible DDR memory for optimal performance.

MSI  OVERCLICKING

A host of features inject artificial intelligence into key aspects of your computing experience to make smarter, real-time optimizations. The MSI Center offers a clean, minimal interface to customize and manage your PC settings. The AI Engine, for example, automatically adjusts settings based on the applications you're using, ensuring seamless performance.

EZ Optimization

ULTRA PERFORMANCE

ULTRA PERFORMANCE
  • memory
  • PROTECTION
  • HIGH-EFFICIENCY MODE
  • Latency Killer

The High-Efficiency Mode is designed to optimize memory performance byincreasing memory bandwidth and reducing latency. With the four sets of RAM timing settings, it allows users to find out the optimal configuration based on the quality of their memory modules.

High-Efficiency Mode MAG B850

Latency Killer

MSI BIOS has introduced the latest Latency Killer feature on all AM5 socket motherboards. Users can enable Latency Killer in the BIOS to reduce memory latency by up to 12% when running at high frequencies. Importantly, it is compatible with a wide range of memory overclocking features, including Memory Try It!!, EXPO, A-XMP, and High-Efficiency Mode, etc.

UP TO 12% Memory latency Reduction

AMD 800 MAG Latency Killer
MSI AMD 800 Latency Killer

*Supports BIOS versions after AGESA 1.2.0.2b.

  • TVS
  • SOLID PIN DESIGN
  • STAINLESS STEEL IO
  • OCP Protection
  • GROUNDING STRUCTURE

Transient Voltage Suppressors (TVS)

Transient Voltage Suppressors (TVS) are safety devices used to protect against excessive voltage. All motherboard models of MSI are equipped with TVS. When the voltage abnormally rises, the TVS switches from a high-resistance state to a low-resistance state, diverting the excessive voltage to ground. This helps prevent circuit damage caused by high voltage.

Transient Voltage Suppressors

solid pin design

The 4-pin, 8-pin, and 24-pin power connectors of MSI motherboards are all designed with solid pins. The solid pin design allows for a more stable transmission of 12V power to the CPU, even when handling high current loads.

Advantages of Solid Pin Power connector

  • Improved stability : Larger contact area enhances stability during power delivery.
  • Low impedance : Solid pins offer low impedance, enabling efficient power flow.
  • Strong durability : The solid pin design ensures strong durability, capable of withstanding demanding conditions.
  • Suitable for high-current applications.
solid pin design

Anti-corrosive Stainless Steel IO Shield

An extra layer of sponge materials along with corrosive resistance IO Shield to help improve static electricity and reduce electromagnetic radiation noise from the system as well as much more durable compare to traditional IO Shields.

icon
icon
Stainless Steel IO

* The image above is an illustrative reference. Please refer to specification pages for more details.

Over Current Protection

MSI motherboards prioritize safety with the embedded Overcurrent Protection (OCP), ensuring crucial components such as the USB ports, DDR memory, PWM IC, and CPU are shielded from excessive current. This proactive defense mechanism curtails the risk of damage or malfunction due to power surges, promoting long-term system stability. This commitment to safeguarding your hardware underscores MSI's dedication to producing motherboards that prioritize durability and stability.

MSI CPU and PWN IC
CPU / PWM IC
MSI DDR Memory Slots
DDR memory Slots
MSI Rear and Front USB ports
Rear & Front USB ports

The Grounding Structure of Power Phases

The grounding structure of power phases is the MSI's exclusive design. This patented design enables to suppress the electromagnetic interference (EMI) generated by the power phases and helps to efficiently conduct heat to the copper plane with grounding properties.

Z790 Grounding Board

FROZR DESIGN

FROZR DESIGN
  • FROZR GUARD
  • FROZR SYNC
  • FROZR CONTROL
  • COMBO FAN

Combo Fan Header

The MSI Combo Fan Header is a versatile component, functioning as both a pump and or fan header. The header will automatically detects whether it is either pump or PWM/DC fan, with it's distinctive gray color ensuring easy identification

Combo Fan Header
Sys Fan
Pump Fan
  • COOLING WIZARD
  • FROZR AI COOLING
  • AUTO DETECT FAN

Cooling Wizard serves as a comprehensive solution for managing fan settings across all MSI products. It ensures superior cooling performance and noise reduction for your gaming PC, offering compatibility with PWM/DC fans and pumps, customizable options, and intuitive temperature monitoring for optimal operation with one click.

MULTIPLE PROFILES
SMART FAN & MANUAL FAN
USER SCENARIO
Multiple Profiles

Multiple Profiles

  • Save up to 5 profiles for multiple occasions

Smart Fan & Manual Fan

Smart Fan & Manual Fan

  • Smart Fan

    Allow users to change the temperature curve with the 4 dots provided

  • Manual Fan

    Allow users to manual change the temperature at a set percentage

User Scenario

User Scenario

  • Follow MSI Center Mode

    Adjust fan settings according to the mode selected in User Scenario

  • BIOS Mode

    Adjust Fan settings in BIOS

  • Customize by User

    Customize fan settings by the users

Frozr AI Cooling targets CPU and GPU temperatures. The AI system detects CPU and GPU temperatures and automatically adjusts the fan duty of system fans to ensure optimal performance.

Frozr AI Cooling

MSI fan headers automatically detect fans running in DC or PWM mode for optimal tuning of fan speeds and silence. Hysteresis also makes your fans spin up fluently to make sure your system stays silent, no matter what.

msi auto detect your fan
TRILINK
  • networking
  • storage
  • Expansion

Experience

Experience
  • audio
  • mystic light
  • BIOS
  • Software
  • Mystic Light
  • Synchronized

GLOW YOUR PC

Splash on some color and vibrant RGB lighting effects using Mystic Light utility of MSI Center, which has million colors and fancy LED effects. Enjoy the full control and creativity of your PC's lighting with one software.

  • Wave

  • Steady

  • Flame

  • Breathing

  • CPU Temperature

  • Color Ring

  • Lightning

  • Receration

  • Meteor

  • Default

EXTEND YOUR RGB EXPERIENCE WITH EASE

Add more color if you want! Mystic Light Extension pin header provides an intuitive way to control additional RGB strips and other RGB peripherals added to a system, without needing a separate RGB controller.

  • A-RAINBOW V2
  • RGB
  • AMBIENT LINK
Msi X670 motherboard with a-rainbow v2
Supports 5V Addressable RGB devices. Compatible with ARGB Gen2 / Gen1 devices.
*Gen2 device only supports 7 RGB themes
Msi X670 RGB
Supports 12V RGB devices.
Msi x670 rgbsync ambient device image
Synchronize lighting theme with compatible lighting devices.
  • Click BIOS X
  • BIOS KEY FEATURES

MSI’s newly designed CLICK BIOS X offers an aesthetically pleasing and user-friendly experience. The new design ensures that users of all experience levels can quickly access and adjust system configurations with ease.

EZ MODE
Advanced Mode
EZ MODE
Advanced ModeP
Game Boost
AI Boost
EXPO / A-XMP
Hardware Monitor
M-Flash
U-Key
Profile
Favorites
Search
Game Boost
Easily boost your CPU performance with the press of a single button for instant overclocking.
AI Boost
Easily enhance your NPU performance with a click, unlocking the full potential of AI processing.
EXPO / A-XMP
Easily apply optimized memory overclocking profiles through a simple one-click activation.
Hardware Monitor
Instantly access real-time critical hardware information, including temperature, memory capacity, clock speed, and voltage.
M-Flash
Easily flash or update the BIOS in just a few minutes directly from the CMOS Setup Utility.
U-Key
Enables secure system access by requiring a specific USB drive for booting, adding an extra layer of security to your PC.
Profile
Save and switch between multiple custom system configurations, allowing for quick adjustments tailored to different tasks or performance needs.
Favorites
Bookmark frequently accessed settings, providing quick and easy access to essential configurations without the need to navigate through the entire menu.
Search
Quickly locate specific settings or options by typing keywords, streamlining navigation and making system adjustments more efficient.
  • MSI CENTER
  • AIDA64
  • NORTON 360

MSI CENTER

MSI brand new MSI Center unifies a suite of MSI software utilities into a single centralized application. Take control of advanced motherboards features and unleash endless possibilities.

AI Engine
Mystic Light
True Color
User Scenario
Hardware Monitoring
AI LAN Manager
Cooling Wizard
System Diagnosis
MSI AI Engine
MSI AI Engine eliminates the need to tweak settings manually and saving you time and effort.
Mystic Light
Create your own colorful masterpiece with ease. Splash any color you want with just a few clicks!
True Color
Optimized monitor’s brightness and color in several modes for different situation, you can also customize by yourself.
User Scenario
One click for setting your computer, even customize own profile as your preference.
Hardware Monitoring
Get immediate access to your critical hardware information in real-time.
AI Lan Manager
MSI AI LAN Manager prioritizes latency-sensitive apps, ensuring the best low-latency online gaming experience.
Cooling Wizard
Cooling Wizard is a comprehensive tool for managing fan settings across MSI products, offering one-click optimization
System Diagnosis
Restore and backup your MSI storage devices in one click to provide stable system usage, you can even monitor the storage status to prevent system crash or data missing.

Exclusive UI of AIDA64 Extreme

MSI motherboards provide 60 days free trial of AIDA64 Extreme - MSI edition. AIDA64 Extreme is an almighty application for system information, diagnostics and benchmarks. With the application, you can monitor the detailed hardware and software information on PC and save it to file in multiple formats such as CSV and HTML.

Opt-in to Cyber Safety with Norton 360 Deluxe

Multiple layers of protection for your devices, online privacy features including our Secure VPN, plus Dark Web Monitoring - all in a single solution. With MSI motherboards, you can enjoy a 60-day free trial of Norton 360 Deluxe.

  • Up to 50 GB PC cloud backup
  • Real time Threat protection and Smart Firewall
  • Password manager
  • PC SafeCam
Norton 360

The MSI trial offer is not available for existing Norton customers. If you have an active Norton subscription, you will need to opt-out of the existing subscription to be eligible for this offer. For Important Subscription, Pricing and Offer Details, please refer to NortonLifeLock License and Services Agreement. NortonLifeLock Product and Service Privacy Notices.

MAG B850M MORTAR

  • 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
  • Lightning Fast Game experience: PCIe 5.0 slot, Lightning Gen 5 x4 M.2
  • 20G USB Type-C & 5G LAN : 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
© AMD, and the AMD Arrow logo, Ryzen, Radeon, FreeSync, and combinations thereof are trademarks of Advanced Micro Devices, Inc. DirectX and Microsoft are registered trademarks of Microsoft Corporation in the US and other jurisdictions. PCI Express is a registered trademark of PCI-SIG Corporation. Vulkan and the Vulkan logo are trademarks of the Khronos Group Inc. Other product names are for identification purposes only and may be trademarks of their respective companies.
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