MSI B450M Mortar Motherboard – Socket AM4 AMD B450 DDR4 Micro ATX

Out of stock

  • Supports 1st, 2nd and 3rd Gen AMD Ryzen™ Desktop Processors for Socket AM4
  • Supports DDR4 Memory, up to 3466(OC) MHz
  • MSI extended PWM and enhanced circuit design ensure even high-end processors run at full speed.
  • Lightning Fast Game experience: 1x TURBO M.2, AMD Turbo USB 3.1 GEN2, Store MI technology
  • Core Boost: With premium layout and fully digital power design to support more cores and provide better performance.
  • DDR4 Boost: Advanced technology to deliver pure data signals for the best gaming performance and stability
  • Flash BIOS Button: Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory, or graphics card.
  • 1 month local Warranty 

This product is currently out of stock and unavailable.

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MSI B450M Mortar Max

The MSI B450M MORTAR MAX motherboard is a solid choice for DIYing a system based on AMD Ryzen processors. Every factor of this motherboard is designed to make the most of your hardware. Enjoy ultra-fast storage speed by installing PCI-E SSDs using two M.2 slots. Protect your long, heavy graphics card with PCI-E Steel Armor. The purest audio will be reproduced to let you aim your enemies precisely.

  • Flash BIOS Button
  • PS/2 Combo Port
  • USB 3.1 Gen1
  • USB 3.1 Gen2 (Type A+C)
  • Golden audio jacks with S/PDIF
  • Arsenal Sticker Area Free for customization with personal style
  • Extended Heatsinks Design Leading heatsink design, extended for maximum cooling and performance
  • Heavy plated gaming heatsinks Military styles designed for maximum cooling
  • DDR4 Boost Optimized traces and isolated memory circuitry
  • Turbo M.2 Delivering speeds up to 32 Gb/s using Gen3 x4
  • PCI-E Steel Armor Protecting VGA cards against bending and EMI
  • Audio Boost Optimized gaming audio using best components

DIY Friendly

MSI motherboards have been designed with tons of smart features for convenient setup and usage, such as pin-header keep out zone, friendly SATA & USB location and multiple cooling solutions, so DIY users can pick and choose any gaming rig they want.

MSI B450M Mortar Max
MSI B450M Mortar Max


Cooling your PC is essential for reliable performance. MSI motherboards feature excellent power design with solid and heavy heatsink. We've made sure to include enough fan headers with full control to allow you to cool your system any way you want.

Maximum Compatibility

Every MSI motherboards are certified by strict mechanic that feature convenient pin-header keep out zone, friendly SATA & USB location for compatibility with the widest range of components and devices, so DIY user can pick and choose the components they want. More than that, we offer a dedicated Qualified Vendor List (QVL) for the most critical part—memory. Combining with MSI DDR4 Boost technology, we provide the maximum compatibility, so you confirm and choose any gaming rig as you want.

MSI B450M Mortar Max
MSI B450M Mortar Max

Bios and Software

Complete your high performance experience with an array of performance enhancing software from MSI. From a loaded yet easy to use BIOS to potent live system tools, get the most out of your motherboard at any moment.


Power on your RYZEN processor with optimized circuit layouts and high quality power delivery parts for an incredibly stable operation.

MSI B450M Mortar Max
MSI B450M Mortar Max


Optimized layout design and a fully isolated memory circuitry ensures perfect stability and performance. You never have to worry about your system crashing during games with MSI DDR4 BOOST.


MSI motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Start games faster, load levels faster and have a real advantage over your enemies.

MSI B450M Mortar Max
MSI B450M Mortar Max


Read and write your files over USB faster than ever. MSI offers a wide variety of options to connect and boost your USB devices, delivering lightning-fast transfer speeds up to 10Gb/s.

In-Game Advantage

MSI motherboards are built with enhanced audio and advanced LAN networking capabilities that turn any gaming experience into an immerse one.

MSI B450M Mortar Max
MSI B450M Mortar Max

Exhilarating and Inspiring

Each MSI motherboard is built based on the specific topic in order to match different tastes and favors. Furthermore, MSI also adopts the modern style to design the heatsink through huge surface and sleek but simple cuts in order to make the heatsink and appearance look ripped and powerful. Combined with neutral color, such as black, grey and silver, as the main background, MSI motherboard can perfect fit different RGB LED effects and strongly shows the gamers tunes.

Industrial Design

MAG series motherboards are focused on functionality and durability. Descended from MSI Arsenal GAMING, these motherboards take their likeliness from rugged military equipment and are ready for battle.

MSI B450M Mortar Max
MSI B450M Mortar Max

Loyal Comrade

With years of experience, MSI is no stranger to building high-performance motherboards. Our R&D and engineering teams have reviewed countless designs, evaluated a wide selection of high quality components, and developed products for reliability even under extreme conditions.

Additional information


New, Open-Box Excellent



Processor Socket

Socket AM4

Chipset Type

AMD B450


1866/ 2133/ 2400/ 2667Mhz (by JEDEC)
For AMD Ryzen Gen3 (R5/R7/R9)
2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3733/ 3866/ 4000/ 4133 MHz (by A-XMP OC MODE)
For AMD Other CPU
2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466 MHz (by A-XMP OC MODE)

Memory Types


Memory Channel


DIMM Slots


Max Memory


PCI-E x16



Gen3(PCI_E1), Gen2(PCI_E4)





M.2 Slot




TPM (Header)



1x Realtek® 8111H

USB 3.2 Ports (Front)

2(Gen1, Type A)

USB 3.2 Ports (Rear)

1(Gen2, Type C), 1(Gen2, Type A), 4(Gen1, Type A)

USB 2.0 Ports (Front)


USB 2.0 Ports (Rear)


Serial Ports (Front)


Audio Port (Rear)

5+ Optical S/PDIF (Realtek® ALC892 Codec)





Direct X


Form Factor


Operating System

Support for Windows® 10 64-bit
Support for Windows® 7 64-bit
* To support Windows® 7 64-bit, you must install an AMD Pinnacle Ridge & Summit Ridge CPU.

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MSI B450M Mortar Motherboard - Socket AM4 AMD B450 DDR4 Micro ATX