

- Supports 12th Gen Intel Core, Pentium Gold and Celeron processors for LGA 1700 socket
- Supports DDR4 Memory, up to 4800+(OC) MHz
- Premium Thermal Solution: Extended Heatsink Design and M.2 Shield Frozr are built for high performance system and non-stop works
- Latest Network Solution: Onboard 2.5G LAN plus Gigabit LAN with LAN Manager deliver the best online experience without lag
- Lightning M.2: Running at PCIe Gen 4 maximizes performance for NVMe based SSDs
- Audio Boost: Reward your ears with studio grade sound quality
- Multi-GPU: With Steel armor PCIe slots. Supports AMD Crossfire
MSI MAG B660M BAZOOKA DDR4
A powerful motherboard that is expertly engineered to unleash the full potential of 12th Gen Intel Core processors. It is built with premium components and superb onboard cooling, and comes with PCI 4.0 and onboard 2.5G LAN plus Gigabit LAN for ultra-fast data transfer. And an HDMI and a DisplayPort video output play nice with the latest monitors and TVs.

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.

THERMAL SOLUTION FOR MORE CORES AND HIGHER PERFORMANCE
With more cores’ processors, thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM heatsink and enhanced circuit design makes sure even high-end Intel CPU to run in full speed with MSI motherboards.
M.2 SHIELD FROZR
World’s fastest SSDs can start to lower performance when getting hot. Part of the motherboards heatsink design, M.2 SHIELD FROZR is the next generation M.2 thermal solution to avoid this by offering the best thermal protection to make sure that SSD maintains maximum performance.

With MSI M.2 Shield FROZR
- Prevents throttling
- Maximizes drive performance
- Higher maximum SSD speeds

Normal M.2 SSD
* Performance vary by model configuration

FULLY CONTROLLABLE IN BIOS AND SOFTWARE
MSI motherboards let you manage speeds and temperatures for all your system and CPU fans. Total Fan Control allows you to check your primary system characteristics in a simplified graphical interface. You can also set up to 4 temperature targets for CPU and motherboard, which will adjust the fan speeds automatically.

FROZR AI COOLING
Detecting CPU & GPU temperatures and automatically adjusting fan duty of system fans to a proper value by adopting MSI AI ENGINE.

Performance mode

Silent mode

Manual mode
OPTIMIZED FOR WATER COOLING
Designed to support the most popular All-In-One & customized water cooling solutions on the market. A dedicated water pump PIN header supports up to 3 amp, giving you full control of the water pump speed. A clearly marked ‘keep-out-zone’ allows for easy and safe installation and a perfect fit.

12 + 1 + 1 DUET RAIL POWER SYSTEM
Unleash and sustain maximum performance with an aggressive VRM design built with digital CPU power system. Combining 8 + 4-pin power connectors and exclusive Core Boost technology, MAG series motherboard is ready to sustain heavy gaming loadings.

CORE BOOST
Core Boost technology combines MSI's premium layout and digital power design which allows for faster and undistorted current delivery to the CPU at pin-point precision. This creates the perfect conditions for multi-core CPU during high-loading operation.

1-SECOND OVERCLOCKING!
MSI Game Boost enables one-second overclocking, giving you the performance boost you need to get more FPS.

MORE FOR PERFORMANCE

LOAD-LINE CALIBRATION
What you set, is what you get. LLC makes sure your CPU voltage remains 100% stable under any load. This greatly improves stability when demanding more CPU performance.

OVERVOLTAGE PROTECTION
Prevents potential short-circuit damage to the CPU and other critical components.

DIGITALL POWER DESIGN
A fully digital power design allows for faster and undistorted current delivery to the CPU at pin-point precision. Creating the perfect conditions for CPU overclocking.

DOUBLE POWER CONNECTORS
8+4 pin connectors deliver adequate power even for an overclocked multi-core CPU.

PRE-INSTALLED I/O SHIELD
Featuring the pre-installed I/O shield, makes your installation process easier and safer. The patent-pending design protects your I/O ports and also prevents electrostatic discharge damage, making your motherboard a strong gaming foundation.

AVOID COLLISION NOTIFICATION
Protective paint is printed around each screw hole to prevent parts from being scratched.

KEEP OUT ZONE
MSI motherboards circuitry ensures the case standoff keep out zones are pure and clean, preventing any component contact or damage to the motherboard.
* Please make sure to remove the unnecessary mounting stand-off when installing the motherboard into the case.
EZ M.2 Clip
Have trouble turning screws?
MSI innovative EZ M.2 clip assists you in installing an M.2 SSD quickly and effortlessly.



PCB Design
The PCB design has been optimized for higher bandwidth and faster transfer speeds, which is also beneficial for reliable circuit transmission.
- 6 PCB layers
- 2oz Thickened Copper

FORTIFY YOUR SYSTEM WITH PCI-E STEEL ARMOR
MSI PCI Express Steel Armor slot is secured to the motherboard with extra solder points and supports the weight of heavy graphics cards. When every advantage in games counts, Steel Armor shields the point of contact from electromagnetic interference.
ULTIMATE MOTHERBOARD PROTECTION
Double ESD protection doubles up the grounding layer around the mounting holes, preventing static discharge surges from damaging the motherboard.

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WINDOWS 11 CERTIFIED
With MSI you benefit from great compatibility and a worry-free user experience when using Microsoft Windows 11.
With a true dedication to performance, our R&D team has made sure everything works as intended when using the latest version of Microsoft Windows on any MSI product.
CERTIFIED FOR GAMING
MSI motherboards has been built and tweaked for hardcore gaming. Feedback from the world’s best esports players and rigorous testing sessions with demanding PC games has resulted in a motherboard that’s both powerful and reliable.


High performance MSI motherboards are loaded with advanced features and the latest technology to overwhelm any challenge at hand no matter whether you’re a gamer, prosumer, or PC enthusiast.

LIGHTNING GEN 4 M.2
Utilizing 12th Gen Intel Core processors, MSI B660 motherboards feature latest Lightning Gen 4 M.2 which is the fastest onboard storage solution on the market with up to 64 Gb/s transfer speed.
FAST AND FUTURE-READY STORAGE
MSI B660 motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Higher efficiency makes your work easier.


OPTANE: BOOST YOUR HDD TO PERFORM LIKE AN SSD
PC Enthusiasts can now enjoy the performance of an SSD on their HDD by coupling it with the new Intel Optane Memory device. Intel Optane technology provides an unparalleled combination of high throughput, low latency, high quality of service, and high endurance.

EXTREME STABILITY & COMPATIBILITY TESTING
MSI conducts thorough memory testing with the most popular memory brands under extreme conditions to ensure your system runs stable no matter what. Our memory partners include brands like Corsair, Crucial, Kingston, and G.Skill to optimize memory modules, configurations and even improve overclocking.

A HUGE STEP OF DDR PERFORMANCE
MSI OC LAB does not merely work hard on extreme overclocking. The XMP memory profile has great improvement on performance and efficiency for B660. Easy to enable XMP profile with auto power settings to get the best memory speed and stability.

EASY OVERCLOCKING WITH XMP PROFILE
The XMP (Extreme Memory Profiles) in MSI BIOS are tested and certified by MSI OC LAB. It is easy to enable with auto power settings to get the best memory speed and stability.
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.

Optimized monitor’s brightness and color in several modes for different situation. You can also customize by yourself.

Elevate latency-sensitive for dedicated online games and restrict the bandwidth to non-essential programs for uninterrupted online gaming.

One click for setting your computer, and even customize your own profile to your preference.

Get immediate access to your critical hardware information in real-time.

Tune select motherboard settings in the OC Setting menu, where options to boost core performance and optimize system cooling are presented in an intuitive interface.

Assume complete control of your fans with Fan Center. Set up to four CPU temperature targets and the motherboard will adjust fan speeds automatically.

Create your own colorful masterpiece with ease. Splash any color you want with just a few clicks!

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.
RESIZABLE BAR (RE-SIZE BAR)
Resizable BAR (Re-Size BAR) is an advanced PCI Express feature that enables the CPU to access the entire GPU frame buffer at once and improve performance.
* Function may differ due to version change. Please update the latest VBIOS/BIOS/Driver through MSI official website or consult service center.


MSI motherboards are built with a variety of connectors to satisfy gamers. Enhanced audio, advanced LAN networking capabilities, USB and Mystic Light turn any gaming experience into an immersive one.
HIGH-BANDWIDTH AND LOW-LATENCY NETWORK
2.5Gbps LAN provides incredible data transfer speed faster than general Gigabit LAN. This is a premium solution for demanding users.

OPTIMIZE ONLINE GAMING TRAFFIC FOR LOWER LATENCY!
MSI LAN Manager automatically classifies and prioritizes the latency-sensitive applications for online games, giving you the best online gaming experience with low latency.
MSI LAN MANAGER
- Automatically prioritizes games above other applications -
- Allows you to change applications' traffic priority -
- Allows you to customize bandwidth for each application -

AUDIO BOOST

DEDICATED HIGH DEFINITION AUDIO PROCESSOR
Make sure you enjoy the purest sound quality in both stereo and surround sound.

HIGH QUALITY AUDIO CAPACITORS
A high fidelity sound experience with exceptional acoustics and realism for studio level headphones is ensured.

HIGH QUALITY AUDIO JACKS
Keep your sound perfect by transmitting your audio with pure digital signal.
ISOLATED AUDIO SIGNAL

ISOLATED AUDIO DESIGN
Like a dedicated sound card, audio components and circuits have been laid on a reserved motherboard section and electrically isolated.

SEPARATED AUDIO LAYERS
Like a dedicated sound card, audio components and circuits have been laid on a reserved motherboard section and electrically isolated.
DE-POP PROTECTION
Audio Boost protects your ears by eliminating those annoying loud popping sounds when you plug/unplug devices or turn your PC on/off.

USB FRONT TYPE-C
MSI gaming motherboards support USB Front Type-C that allows gamers to connect with the latest USB devices. Build up a system with MSI PC case to have the most convenient experience.

EXTEND YOUR RGB EXPERIENCE WITH EASE
MYSTIC LIGHT EXTENDSIOIN
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.

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AMBIENT DEVICES SUPPORT
Wireless devices are also controllable by using MSI Center. Ambient Link perfectly synchronizes MSI Mystic Light products with on-screen gaming and scenarios, as well as the compatible lighting accessories. Bringing you the most immersive and realistic experience.
