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Compact Mini-ITX board with dark PCB, silver socket and black heatsinks

MSI

MSI B450I GAMING PLUS AC AMD motherboard

SKU CH-YKZ1-CJ6EC

Socket AM4 Mini-ITX board supporting first- and second-generation Ryzen CPUs with dual-channel DDR4 up to 3466 MHz and 32 GB maximum memory

  • ProcessorFirst and second generation AMD Ryzen processors with AM4 pi
  • ChipsetAMD B450
  • CPU socketSocket AM4
  • Supported memorySupport dual-channel DDR4 1866/2133/2400/2667/2800/2933/3000
  • Max supported RAM32 GB
  • PCI slots1 PCIe 3.0 x16 slot First and second generation AMD Ryzen pr
  • Supports first and second generation Ryzen processors with Socket AM4
  • Dual-channel DDR4 memory up to 3466 MHz and 32 GB capacity
  • PCIe 3.0 x16 slot runs at full x16 speed with Ryzen CPUs
  • Realtek ALC887/897 codec delivers 7.1-channel high-quality audio
  • Realtek 8111H Gigabit LAN plus USB 3.1 Gen1 and USB 2.0 ports

Socket AM4 Mini-ITX board

The MSI B450I Gaming Plus AC is an AMD B450 motherboard built for Socket AM4 processors. It fits the Mini-ITX form factor and delivers a compact platform for small-form-factor builds. The board provides dual-channel DDR4 memory support and a single PCIe 3.0 x16 expansion slot. It targets users who need a space-saving foundation for Ryzen-based systems.

Builders with compact cases

This board suits builders assembling Mini-ITX rigs that rely on Socket AM4 CPUs and DDR4 modules. It offers four SATA III ports and one M.2 interface for storage, plus 7.1-channel audio and a Gigabit LAN port. It is not for systems requiring more than two DIMM slots or multiple full-length graphics cards. Buyers needing additional PCIe lanes or higher memory capacity should look elsewhere.

Dual-channel DDR4 up to 32 GB

The memory controller supports dual-channel DDR4 at speeds from 1866 to 3466 MHz with a maximum capacity of 32 GB. This single specification determines whether the board matches your planned memory kit. Verify your modules match the supported frequencies and total capacity before purchase.

How it compares

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

Price $124.99
Cheaper than about 68% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMSI B450I GAMING PLUS AC
Model nameMSI B450I GAMING PLUS AC
Processor
ProcessorFirst and second generation AMD Ryzen processors with AM4 pins and RadeonVega graphics
CPU socketSocket AM4
ChipsetAMD B450
Memory
Supported memorySupport dual-channel DDR4 1866/2133/2400/2667/2800/2933/3000/3066/3200/3466 MHz memory
Max supported RAM32 GB
Storage
SATA and RAID support1XM.2 interface, 4xSATA III interface
Audio & video
Audio chipRealtek ALC887/ALC897 Codec
7.1-Channel high-quality sound effects
Connectivity
Ethernet controller1 Realtek 8111H Gigabit network interface card
Ports & slots
PCI slots1 PCIe 3.0 x16 slot
First and second generation AMD Ryzen processors support x16 speed
Ryzen processors with RadeonVega graphics support x8 speeds

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