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Green Micro ATX motherboard with silver CPU socket and black memory slots

ASUS

ASUS PRIME B450M-K AMD B450 Micro ATX Motherboard

SKU CH-0D00-FQVWQ

Micro ATX board with AMD B450 chipset and Socket AM4 supports DDR4 memory up to 64GB

  • CPU socketSocket AM4
  • ChipsetAMD B450
  • Max supported RAM64 GB
  • Supports up to 64GB DDR4 memory capacity
  • AMD B450 chipset for stable platform performance
  • Micro ATX form factor fits compact builds
  • Socket AM4 compatibility for processor choice
  • Includes SATA cable and I/O back panel

ASUS PRIME B450M-K AM4 Motherboard

The ASUS PRIME B450M-K is a Micro ATX motherboard built on the AMD B450 chipset. It uses the Socket AM4 interface and supports DDR4 memory up to 64GB capacity. The board is intended for desktop PC builds that require a compact form factor with standard AMD platform features.

Suited for AM4 DDR4 system builds

This motherboard suits builders assembling a new system or replacing a board in an existing AM4 chassis. It fits Micro ATX cases and accepts DDR4 modules up to the stated 64GB limit. Buyers needing a different socket type, a larger ATX layout, or integrated Wi-Fi should select an alternative model.

64GB DDR4 maximum memory capacity

The single specification that confirms fit is the 64GB DDR4 maximum memory capacity. Verify that the planned processor uses Socket AM4 and that the memory kit matches the DDR4 standard. The package includes the board, a CMOS battery, one SATA cable, and the rear I/O panel.

How it compares

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

Price $81.99
Cheaper than about 82% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product lineASUS PRIME B450M-K
Model nameASUS PRIME B450M-K
Processor
CPU socketSocket AM4
ChipsetAMD B450
Memory
Max supported RAM64 GB

Questions about this item

Does the ASUS PRIME B450M-K run hot or draw much power when it is running all day?

The board uses the AMD B450 chipset and Micro ATX layout, so typical idle power is low and a standard case fan keeps temperatures in check during continuous use.

What else must I already own for the ASUS PRIME B450M-K to work?

You need a Socket AM4 processor, DDR4 memory modules up to 64GB total, a Micro ATX-compatible case, a PSU with a 24-pin ATX and 4-pin CPU connector, and at least one SATA drive or other boot device.

How does the ASUS PRIME B450M-K behave alongside older hardware I may keep?

The board provides DDR4 slots and SATA ports, so existing DDR4 RAM and SATA SSDs or hard drives connect directly; legacy PCIe add-in cards fit the available expansion slots.

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