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Black ATX motherboard with silver heatsinks and no RGB lighting

MSI

MSI MEG B550 UNIFY-X AMD motherboard Socket AM4 DDR4 64GB

SKU CH-V32J-0Y9QA

ATX board for Socket AM4 Ryzen 5000, 3000 and 4000 G-Series CPUs with dual-channel DDR4 up to 5300MHz, 64GB max, 2.5Gbps LAN, Realtek ALC1220P 7.1 audio, PCIe 4.0 x16 and four M.2 slots

  • CPU Socket TypeSocket AM4
  • CPU TypeSupports AMD Ryzen™ 5000 & 3000 Series desktop processors (n
  • ChipsetAMD B550
  • Memory StandardSupports dual-channel DDR4 1866-5300MHz memory
  • Maximum Memory Supported64GB
  • PCI SlotsAMD Processor 1x PCIe 4.0/ 3.0 x16 slot (PCI_E1) AMD B550 Ch
  • Supports Ryzen 5000 and 3000 series CPUs via Socket AM4
  • Dual-channel DDR4 memory up to 5300 MHz with 64 GB capacity
  • 5 Gbps LAN for fast wired networking
  • 1-channel Realtek ALC1220P audio for immersive sound
  • PCIe 4.0 x16 slot plus three additional PCIe 3.0 slots for expansion

Socket AM4 DDR4 platform

The MSI MEG B550 UNIFY-X is an ATX motherboard built on the AMD B550 chipset for Socket AM4 processors. It supports AMD Ryzen 5000 and 3000 Series desktop CPUs, plus Ryzen 4000 G-Series chips. The board runs dual-channel DDR4 memory from 1866 up to 5300 MHz with a maximum capacity of 64 GB.

Bundled accessories and their effect

The package includes the motherboard, a CMOS battery, one SATA cable and a chassis I/O back panel. A WiFi antenna is supplied only when the board has an integrated WiFi module. No other accessories or software are included, so you must source any additional cables, mounting hardware or operating system media separately.

Compatibility checks before ordering

Verify that your CPU is a supported Ryzen 5000, 3000 or 4000 G-Series model; the 3400G and 3200G are explicitly not compatible. Confirm your power supply provides the required ATX and CPU power connectors for this board. Ensure your chassis fits an ATX form factor and that you have the necessary M.2 or SATA storage devices for the available interfaces.

Points forts

  • Supports Ryzen 5000 and 3000 series CPUs via Socket AM4
  • Dual-channel DDR4 memory up to 5300 MHz with 64 GB capacity
  • 5 Gbps LAN for fast wired networking
  • 1-channel Realtek ALC1220P audio for immersive sound
  • PCIe 4.0 x16 slot plus three additional PCIe 3.0 slots for expansion

Caractéristiques

BrandMSI
SeriesMSI MEG B550 UNIFY-X
ModelMSI MEG B550 UNIFY-X
CPU Socket TypeSocket AM4
CPU TypeSupports AMD Ryzen™ 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen™ 5 3400G & Ryzen™ 3 3200G) and AMD Ryzen™ 4000 G-Series desktop processors
ChipsetAMD B550
Memory StandardSupports dual-channel DDR4 1866-5300MHz memory
Maximum Memory Supported64GB
PCI SlotsAMD Processor
1x PCIe 4.0/ 3.0 x16 slot (PCI_E1)
AMD B550 Chipset
1x PCIe 3.0 x16 slot (PCI_E4), supports x4 speed
2x PCIe 3.0 x1 slots (PCI_E2 & PCI_E3)
SATA RAID6XSATA III interface, 4xM.2 interface
Audio ChipsetRealtek ALC1220P Codec
7.1-Channel High Definition Audio
Supports S/PDIF output
LAN Chipset1x Realtek RTL8125B 2.5Gbps LAN controller
Onboard USBAMD Processor
4x USB 3.2 Gen 2 10Gbps ports(3 Type-A ports and 1 Type-C port) on the back panel
AMD B550 Chipset
1x USB 3.2 Gen 2 10Gbps Type-C internal connector
2x USB 3.2 Gen 1 5Gbps ports are available through the internal USB 3.2 Gen 1 5Gbps connector
4x USB 2.0 ports on the back channel
AMD B550 chipset + USB 2.0 Hubs
4x USB 2.0 ports are available through the internal USB 2.0 connectors

Questions sur cet article

Does the board ship with a fresh CMOS battery, or will I need to replace it soon?

A new CMOS battery is included in the box, so no immediate replacement is required.

Which PCIe slot becomes the bandwidth bottleneck when a high-end GPU and multiple M.2 drives run together?

The chipset-linked PCIe 3.0 x16 slot runs at x4 speed, so it limits throughput before the CPU-linked PCIe 4.0 x16 slot does.

How warm does the Realtek RTL8125B 2.5Gbps LAN controller get during all-day transfers?

The controller is rated for continuous 2.5 Gbps operation without active cooling, so temperatures stay within normal limits under sustained load.

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