MSI MEG B550 Unify-X gaming DDR4 AMD Motherboard

The MSI MEG B550 Unify-X is a full-size ATX motherboard built on the AMD B550 chipset, designed for enthusiast builders targeting maximum performance from AMD Ryzen 5000, 4000 G-Series, and 3000 Series desktop processors via the Socket AM4 interface. Note that it is not compatible with the AMD Ryzen 5 3400G or Ryzen 3 3200G. At the heart of the board is an extreme power delivery system featuring a direct 14+2 phase power design with 90A power stages and dual CPU power connectors. This configuration is engineered to sustain high-end Ryzen CPUs running at full load without thermal throttling. Complementing this is an aluminium-covered PWM heatsink with an additional choke thermal pad rated at 7W/mk, alongside a PCB constructed with 2oz thickened copper layers for improved heat dissipation and signal integrity. Storage capability is a major highlight: four onboard M.2 slots support the Lightning Gen 4 M.2 standard, delivering up to 64 Gb/s of bandwidth per slot. This makes the Unify-X well-suited to NVMe RAID configurations and storage-heavy workloads. On the memory side, the board provides two DDR4 DIMM slots supporting dual-channel operation with speeds up to 5300 MHz (overclocked), and a maximum capacity of 64 GB. The graphics card interface is PCI-E, and the board's form factor is ATX, measuring 30.48 x 24.38 x 6.35 cm and weighing approximately 2.27 kg. A pre-installed I/O shield simplifies installation and protects rear ports from electrostatic discharge. Fan and thermal management is handled through MSI's Total Fan Control system, accessible both in BIOS and via software. Up to four temperature targets can be defined, with fan speeds adjusted automatically in response. The board also ships with an exclusive DIY Stands Set, enabling open-air test-bench builds and flexible fan mounting configurations. Verified Specifications: - Chipset: AMD B550 - Socket: AM4 - Form Factor: ATX (30.48 x 24.38 x 6.35 cm) - Memory: 2x DDR4 DIMM, dual-channel, up to 64 GB, up to 5300 MHz (OC) - Storage: 4x M.2 (Lightning Gen 4, up to 64 Gb/s per slot) - VRM: 14+2 phase, 90A power stages, dual CPU power connectors - GPU Interface: PCI-E - Weight: 2.27 kg - Compatible CPUs: AMD Ryzen 5000, 4000 G-Series, 3000 Series (AM4; excludes Ryzen 5 3400G and Ryzen 3 3200G)