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Micro ATX motherboard with black PCB and silver heatsinks

GIGABYTE

GIGABYTE B450M S2H AMD B450 motherboard

SKU CH-QWBP-XP8PW

Micro-ATX AM4 board with AMD B450 chipset, two DDR4 slots for up to 32 GB, one PCIe 3.0 x16 and two PCIe 2.0 x1 slots, four SATA III ports plus one M.2, Realtek ALC887 7.1 audio and gigabit LAN

  • ProcessorAMD AM4 Slots, Supports: AMD Ryzen ™ 5000 Series/Ryzen ™ 500
  • ChipsetAMD B450
  • CPU socketAMD AM4
  • Max supported RAM32 GB
  • PCI slots1 PCI-E x16 slot, supporting x16 operating specifications (P
  • SATA and RAID support1XM.2 interface, 4xSATA III interface
  • Supports Ryzen 5000 and 3000 series processors with AM4 socket
  • 32 GB DDR4 maximum memory capacity across two DIMM slots
  • PCIe 3.0 x16 slot plus two PCIe 2.0 x1 slots for expansion
  • Realtek ALC887 audio codec delivers 7.1 channel high-definition sound
  • Realtek Gigabit LAN provides 1000 Mbit wired network connectivity

Micro-ATX AMD B450 Board

The GIGABYTE B450M S2H is a Micro-ATX motherboard built on the AMD B450 chipset for Socket AM4 processors. It supports Ryzen 5000 Series, 5000 G Series, 4000 G Series, 3000 and 3000 G-Series CPUs. Two DDR4 DIMM slots accept up to 32GB of system memory.

Sustained Load Behaviour

The board provides one PCI-E 3.0 x16 slot and two PCI-E 2.0 x1 slots for expansion cards. Storage connects through a single M.2 interface and four SATA III ports. Networking uses an integrated Realtek GbE controller rated for 10/100/1000 Mbit. Audio is handled by a Realtek ALC887 codec with 7.1 channel support.

Compatibility Checklist

Verify that your chassis accepts a 24.4 by 20.5 cm Micro-ATX form factor and that the AM4 cooler mounting pattern matches your CPU cooler. Confirm your power supply carries the required ATX 24-pin and 8-pin CPU connectors. The rear I/O supplies two USB 3.1 Gen 1 ports and two USB 2.0 ports; internal headers add four more USB 2.0 connections.

How it compares

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

Price $92.99
Cheaper than about 78% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameGIGABYTE
Product lineGIGABYTE B450M S2H
Model nameGIGABYTE B550M AORUS ELITE
Processor
ProcessorAMD AM4 Slots, Supports: AMD Ryzen ™ 5000 Series/Ryzen ™ 5000 G Series/Ryzen ™ 4000 G Series/Ryzen ™ 3000 and Ryzen ™ 3000 G-Series Processors
CPU socketAMD AM4
ChipsetAMD B450
Memory
Max supported RAM32 GB
Storage
SATA and RAID support1XM.2 interface, 4xSATA III interface
Connectivity
Ethernet controllerIntegrated Realtek ® GbE network chips (10/100/1000 Mbit)
Ports & slots
PCI slots1 PCI-E x16 slot, supporting x16 operating specifications
(PCI-EX16 slot supports PCI-E 3.0)
2 PCI-E x1 slots
(PCI-E x1 slot supports PCI-E 2.0)

Questions about this item

How loud or hot does the GIGABYTE B450M S2H get when running a Ryzen 5000 series CPU all day?

The board has no active cooling of its own; thermal output and fan noise depend entirely on the CPU cooler you pair with the Ryzen 5000 series processor.

Which parts must I already own for this motherboard to function?

You need an AMD AM4 processor, DDR4 memory modules, a power supply with 24-pin and 4-pin CPU connectors, and a chassis that accepts a 24.4 by 20.5 cm Micro-ATX board.

Will my existing PCIe 2.0 expansion cards work in the GIGABYTE B450M S2H?

Yes, the two PCIe x1 slots operate at PCIe 2.0 speeds, so older PCIe 2.0 cards will function normally.

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