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Dark green Micro ATX board with black heatsinks and reinforced PCIe slot

ASUS

ASUS TUF GAMING B450M-PRO S AMD motherboard

SKU CH-MN7T-J0K5Q

Micro-ATX AMD B450 board with 8+2 DrMOS power stages, 2.5Gb LAN, BIOS FlashBack, AI noise-cancelling microphone, USB 3.2 Gen 2 Type-A and Type-C, HDMI, four SATA 6Gb/s ports, two M.2 slots.

  • ProcessorRyzen / Athlon Series
  • ChipsetAMD B450
  • Form factorMicro ATX
  • CPU socketAM4
  • Memory slot count4 × 288pin (DDR4)
  • Supported memoryDDR4 2666
  • Supports 3rd, 2nd and 1st Gen Ryzen CPUs
  • 128 GB DDR4 maximum capacity across four slots
  • 5 Gb LAN for faster wired networking
  • AI noise-cancelling microphone input for clearer voice chat
  • BIOS FlashBack enables updates without a CPU installed

Compact AM4 Platform

The ASUS TUF GAMING B450M-PRO S is a Micro-ATX motherboard built on the AMD B450 chipset for AM4 socket processors. It supports 1st, 2nd and 3rd Generation Ryzen CPUs as well as Athlon APUs with Radeon Vega graphics. The board delivers an 8+2 DrMOS power stage design, 2.5Gb LAN, USB 3.2 Gen 2 Type-A and Type-C, plus HDMI output for APU video.

Build Fit

This board suits compact gaming or workstation builds that need dual-channel DDR4 up to 128GB and two M.2 slots alongside four SATA 6Gb/s ports. It also fits users who value BIOS FlashBack and AI noise-canceling microphone support. Builds requiring integrated Wi-Fi, more than two full-length PCIe 3.0 x16 slots or a newer chipset feature set should consider other platforms.

Deciding Spec

The single specification that decides compatibility is the AM4 socket paired with the B450 chipset. This combination dictates which Ryzen and Athlon processors are supported and limits PCIe connectivity to Gen 3.0 on the primary x16 slot and Gen 2.0 on the secondary x16 slot. Verify your CPU generation and lane requirements against this constraint before purchase.

How it compares

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

Price $98.99
Cheaper than about 76% of the 1,906 comparable items (median $224.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameASUS
Model nameTUF GAMING B450M-PRO S
Processor
ProcessorRyzen / Athlon Series
CPU socketAM4
ChipsetAMD B450
Memory
Memory slot count4 × 288pin (DDR4)
Supported memoryDDR4 2666
Max supported RAM128 GB
Memory channelsDual Channel
ECC supportYes
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots2 x M.2
SATA and RAID support0/1/10
Graphics
Onboard video chipSupported only by CPU with integrated graphic
Audio & video
Audio chipRealtek ALC S1200A Surround Sound High Definition Audio CODEC
Sound channels7.1 Channels
Connectivity
Ethernet controllerRealtek RTL8125B
Maximum network speed2.5 Gbit/s
Ports & slots
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
PCIe x16 slotsNone
PCIe x1 slots1 x PCI Express x1
Rear panel ports1 x HDMI / 3 x USB 3.1 Gen 1
HDMI ports1 x HDMI
USB 3.0 ports3 x USB 3.0
Onboard USB headers2 x USB 3.2 + 4 x USB 2.0
Power
Power connectors24 Pin
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Compatibility
Windows 11 supportSupported
More details
PCI express 2.0 x161 x PCI Express 2.0 x16
LightingRGB

Questions about this item

What is the maximum DDR4 capacity this board supports?

The board supports up to 128 GB of DDR4 memory across four slots.

How much power does the 8+2 DrMOS power-stage design draw under sustained load?

The 8+2 DrMOS power stages deliver efficient power to the CPU with reduced heat during extended sessions.

Which graphics output ports are available when using a Ryzen processor with integrated Radeon Vega graphics?

The rear panel provides HDMI and DisplayPort outputs for CPUs that include integrated Radeon Vega graphics.

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