MSI MAG B550 TOMAHAWK Motherboard ATX - Supports AMD Ryzen 3rd Gen Processors, AM4, DDR4 Boost (4866MHz/OC), 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16, 2 x M.2, HDMI, 2.5G LAN by Amazon.co.uk

Price last update: 12/06/2025
  • Powered by 3rd generation AMD Ryzen 9, Ryzen7, Ryzen 5 AM4 to maximize connectivity and speed with dual M.2, PCIe 4.0, USB 3.2 Gen2 and up to 128 GB of DDR4 (4886 MHz)
  • Dual LAN includes 2.5G and Gigabit LAN to provide a great networking performance and online gaming experience
  • With 3rd Gen Ryzen processors, this motherboard features the latest Lightning Gen 4 solution on both PCI-E and M.2 slot, which allow for faster data transfer on graphics cards, storage devices and networking devices
  • Mystic Light provides a complete function to control the RGB light all around the system; it supports both RGB and RAINBOW LED strip, and 16.8 million colours/29 effects controlled in one click
  • AUDIO BOOST which rewards your ears with studio grade sound quality for the most immersive gaming experience
  • Enhanced Thermal Solution includes extended heatsink, 7 W/mK level thermal and choke pad with 2 oz thickened copper PCB to ensure best performance for gamers
  • Pre-installed I/O Shielding provides better EMI protection and more convenience for installation

    Description

    About MSI
    MSI is a trusted name in gaming and esports. Having dedicated countless hours and committed numerous resources to support the world’s most aspiring and best gamers, MSI use their knowledge and expertise in their products in return. MSI integrated all gamer’s aspirational functions in its gaming rigs and pushing the performance beyond limits.
    MAG B550 TOMAHAWK
    Advancing Ascension
    Experience the new generation of the MAG B550 TOMAHAWK motherboard powered by 3rd Gen AMD 3000 series AM4 processors. Outperform your system's potential with 2.5G LAN plus Gigabit LAN. Exclusive DDR4 Boost and Core Boost are created to keep you one step ahead of your competition. Extended Heatsink Design, 7W/mK level thermal & choke pad with 2oz thickened copper help your PC remain cool, high performing and reliable.
    Designed for 3rd Gen AMD Ryzen processors with Lightning Gen 4 M.2, PCIe 4.0, USB 3.2 Gen 2x2
    Mystic Light provides a complete function to control the RGB light all around the system
    Extended Heatsink Design improves VRM heat dissipation and ensures the power delivery system can sustain even high-end processors running at full load
    Front USB Type-C allows gamers to be compatible with the latest PC chassis and perfect for external drives and other mobile devices
    LIGHTNING GEN 4 SOLUTION
    The latest Gen4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed. PCIe 4.0 maintains both backward and forward compatibility with older and newer specifications.
    ENHANCED THERMAL SOLUTION
    Higher performance generates more heat. Thermal solution is very important to B550 chipset which featured latest Gen4 bandwidth. MSI motherboards featured extended heatsink, 7W/mK level thermal & choke pad, 2oz thickened copper and M.2 Shield Frozr to provide best performance for enthusiast gamers and prosumers.
    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 while doing.
    USB TYPE-C READY IN BOTH FRONT CASE PANEL & REAR IO
    Get all the performance benefits from the USB Type-C connector. This reversible USB connector allows for effortless connecting of USB devices.
    MAXIMIUM DATA TRANSFER WITH 2.5G Plus Gigabit t LAN
    Features high-bandwidth and low-latency Ethernet networks for demanding creators and power users. Onboard 2.5Gbps plus Gigabit LAN connectivity provides incredible data transfer speed faster than ever before. MSI LAN Manager automatically classifies and prioritises the latency-sensitive for your applications, giving you the best online experience with low latency.
    PRE-INSTALLED IO SHIELDING
    Featuring the pre-installed IO shielding, makes your installation process easier and safer. The patent design protect your IO ports also prevent electrostatic discharge damage, makes your motherboard a strong gaming foundation.
    CPU
    Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
    Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
    Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
    Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
    Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
    Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
    Chipset
    AMD B550 Chipset
    AMD B550 Chipset
    AMD B550 Chipset
    AMD B550 Chipset
    AMD B550 Chipset
    AMD B550 Chipset
    Memory
    4 x DIMM; Max. 128GB DDR4; 4866+ MHz
    4 x DIMM; Max. 128GB DDR4; 4400+ MHz
    4 x DIMM; 4 x DIMM; Max. 128GB DDR4; 4400+ MHzMax. 128GB DDR4; 4400+ MHz
    4 x DIMM; Max. 128GB DDR4; 4400+ MHz
    4 x DIMM; Max. 128GB DDR4; 4400+ MHz
    PCIe x16 Slots
    1x PCIe 4.0 x16 slots (@x16) 1x PCIe 3.0 x16 slots (max.@x4) 2x PCIe 3.0 x1 slots
    1x PCIe 4.0 x16 slots (@x16) 1x PCIe 3.0 x16 slots (max.@x4) 2x PCIe 3.0 x1 slots
    1x PCIe 4.0 x16 slots (@x16) 1x PCIe 3.0 x16 slots (max.@x4) 2x PCIe 3.0 x1 slots
    1x PCIe 4.0 x16 slots (@x16) 2x PCIe 3.0 x1 slots
    1x PCIe 4.0 x16 slot (x16 / x4) 1x PCIe 3.0 x16 slot (max.@x4) 2x PCIe 3.0 x1 slots
    1x PCIe 4.0 x16 slots (@x16) 2x PCIe 3.0 x1 slots
    Graphics
    HDMI, DisplayPort
    HDMI, DisplayPort
    HDMI, DisplayPort
    HDMI, DisplayPort
    HDMI, DisplayPort
    HDMI, DisplayPort, VGA
    Audio
    Audio Boost
    Audio Boost
    Audio Boost
    Audio Boost
    Audio Boost
    Audio Boost
    32Gb/s M.2
    1x 22110 (PCIe 4.0 x4 and SATA mode) 1x 2280 (PCIe 3.0 x4 mode)
    1x 2280 (PCIe 4.0 x4 and SATA mode) 1x 2280 (PCIe 3.0 x4 mode)
    1x 2280 (PCIe 4.0 x4 and SATA mode) 1x 2280 (PCIe 3.0 x4 mode)
    1x 2280 (PCIe 4.0 x4 and SATA mode) 1x 2280 (PCIe 3.0 x4 mode)
    1x 22110 (PCIe 4.0 x4 and SATA mode) 1x 2280 (PCIe 3.0 x4 mode)
    1x 2280 (PCIe 4.0 x4 and SATA mode) 1x 2280 (PCIe 3.0 x4 mode)
    Wireless
    -
    2x2 Wi-Fi with MU-MIMO 802.11 a/b/g/n/ac/ax
    -
    -
    -
    1x1 Wi-Fi 802.11 a/b/g/n/ac
    Mystic Light
    Yes
    N/A
    N/A
    N/A
    N/A
    N/A
    Form Factor
    ATX
    Micro ATX
    Micro ATX
    Micro ATX
    ATX
    Micro ATX

    Product information

      • Brand:MSI
      • CPU socket:Socket AM4
      • Compatible devices:Personal Computer
      • RAM memory technology:DDR4
      • Compatible processors:3rd generation AMD Ryzen 9, Ryzen7, Ryzen 5 AM4
      • Chipset type:AMD B550
      • Memory clock speed:4866 MHz
      • Platform:Windows 10
      • Series:MAG B550 TOMAHAWK
      • CPU model:Ryzen 9
      • Product Dimensions:30.48 x 3.81 x 24.38 cm; 1.3 Kilograms
      • Batteries:1 Lithium Ion batteries required.
      • Item model number:7C91-001R
      • Manufacturer:MSI COMPUTER
      • Color:Black
      • Form Factor:ATX
      • Processor Type:Ryzen 9
      • Processor Socket:Socket AM4
      • Memory Technology:DDR4
      • Computer Memory Type:DDR4 SDRAM
      • Maximum Memory Supported:128 GB
      • Memory Clock Speed:4866 MHz
      • Graphics Card Interface:PCI Express
      • Wireless Type:5 GHz Radio Frequency, 2.4 GHz Radio Frequency
      • Number of USB 2.0 Ports:2
      • Wattage:3600 watts
      • Are Batteries Included:No
      • Lithium Battery Energy Content:2 Kilowatt Hours
      • Lithium Battery Packaging:Batteries packed with equipment
      • Lithium Battery Weight:2 Grams
      • Number Of Lithium Ion Cells:5
      • Number of Lithium Metal Cells:5
      • Item Weight:1.3 kg

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      MSI MAG B550 TOMAHAWK Motherboard ATX - Supports AMD Ryzen 3rd Gen Processors, AM4, DDR4 Boost (4866MHz/OC), 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16, 2 x M.2, HDMI, 2.5G LAN
      MSI MAG B550 TOMAHAWK Motherboard ATX - Supports AMD Ryzen 3rd Gen Processors, AM4, DDR4 Boost (4866MHz/OC), 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16, 2 x M.2, HDMI, 2.5G LAN by Amazon.co.uk
      Price last update: 12/06/2025