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Black ATX motherboard with silver heatsinks and red accents

MSI

MSI B450 GAMING PLUS MAX AMD motherboard

SKU CH-3EZ5-26RW1

Socket AM4 board supports first- and second-generation Ryzen CPUs, dual-channel DDR4 up to 3466 MHz and 64 GB memory, with 7.1-channel audio and Gigabit LAN

  • ProcessorAMD first- and second-generation Ryzen processors with AM4 p
  • ChipsetAMD B450
  • CPU socketSocket AM4
  • Supported memorySupport dual-channel DDR4 1866/2133/2400/2666/2800/2933/3000
  • Max supported RAM64 GB
  • PCI slots1 PCIe 3.0 x16 slot (PCI_E1) AMD first and second generation
  • Supports fast dual-channel DDR4 up to 3466 MHz for responsive multitasking
  • 64 GB maximum memory capacity handles heavy workloads and large datasets
  • PCIe 3.0 x16 slot delivers full bandwidth for modern graphics cards
  • Realtek ALC892 codec provides 7.1-channel high-definition audio
  • Realtek 8111H Gigabit LAN ensures stable wired network connectivity

AM4 Board for Ryzen Builds

This MSI B450 GAMING PLUS MAX motherboard fits the AMD AM4 socket and the B450 chipset. It supports first- and second-generation Ryzen CPUs plus Ryzen APUs with Radeon Vega graphics. The ATX layout provides standard mounting points for typical chassis.

Ideal for DDR4 Upgraders

Builders who need up to 64 GB of dual-channel DDR4 at speeds from 1866 to 3466 MHz will find the four slots useful. Users requiring PCIe 4.0 lanes, integrated Wi-Fi or more than one full-length PCIe 3.0 x16 slot should consider a different chipset.

Primary PCIe 3.0 x16 Slot

The board delivers a single PCIe 3.0 x16 slot running at x16 with first- and second-generation Ryzen and at x8 with Ryzen APUs. A second x16-sized slot operates at PCIe 2.0 x4. This lane split decides whether the board matches your graphics or add-in card plans.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $85.99
Cheaper than about 81% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMSI B450 GAMING PLUS MAX
Model nameMSI B450 GAMING PLUS MAX
Processor
ProcessorAMD first- and second-generation Ryzen processors with AM4 pins, as well as Ryzen processors with Radeon Vega display chips
CPU socketSocket AM4
ChipsetAMD B450
Memory
Supported memorySupport dual-channel DDR4 1866/2133/2400/2666/2800/2933/3000/3066/3200/3466 MHz memory
Max supported RAM64 GB
Storage
SATA and RAID support1XM.2 interface, 6xSATA III interface
Audio & video
Audio chipRealtek ALC892 decoding chip
7.1-Channel high-quality sound effects
Connectivity
Ethernet controller1 Realtek 8111H Gigabit network interface card

Questions about this item

Does the B450 chipset limit the primary PCIe 3.0 x16 slot to x8 when a Ryzen processor with Radeon Vega graphics is installed?

Yes, the primary slot runs at x8 speed with a Ryzen processor that includes Radeon Vega graphics, while first- and second-generation Ryzen CPUs without integrated graphics use the full x16 bandwidth.

What physical clearance does the board require for the ATX I/O shield and mounting holes?

The board uses a standard ATX I/O shield and nine mounting holes that align with any ATX-compatible case; the shield is included in the package.

Which BIOS step is often missed when installing a first- or second-generation Ryzen CPU on this board?

After seating the CPU and cooler, you must update the BIOS to a version that supports the installed Ryzen generation before the system will post.

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