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Green rectangular micro ATX board with silver heatsinks and black slots

GIGABYTE

GIGABYTE B840M D2H AMD motherboard

SKU CH-09Y9-J6NRC

Micro-ATX AM5 board with DDR5 support up to 7600 MT/s, 128 GB capacity, HDMI 2.1 output at 4096×2160 60 Hz, and X3D Turbo Mode for Ryzen 9000 and 7000 series

  • X3D Turbo Mode boosts Ryzen 9000 gaming performance through BIOS optimisation
  • Supports Ryzen 9000, 8000 and 7000 series processors on AM5 socket
  • DDR5 memory up to 7600 MT/s overclocked across two DIMM slots
  • 128 GB maximum system memory capacity with 64 GB per module
  • HDMI 2.1 port delivers 4096×2160 resolution at 60 Hz

Micro ATX AMD AM5 motherboard

The GIGABYTE B840M D2H is a Micro ATX board built around the AMD B840 chipset for Socket AM5 processors. It supports Ryzen 9000, 8000 and 7000 series CPUs and provides two DDR5 DIMM slots for up to 128 GB of system memory. The board includes an HDMI 2.1 port capable of 4096x2160 at 60 Hz with HDR and HDCP 2.3 support.

X3D Turbo Mode for gaming uplift

A dedicated BIOS feature called X3D Turbo Mode optimises Ryzen 9000 X3D processors for higher gaming frame rates and lower latency. The same mode also lets non-X3D Ryzen 9000 chips reach similar gaming performance levels. This jump is worth it when you want maximum frames per second without manual overclocking.

Two DDR5 slots and single HDMI output

Installation follows standard Micro ATX mounting with two memory slots that accept 1Rx8, 2Rx8 or 1Rx16 un-buffered DDR5 modules up to 64 GB each. AMD EXPO and XMP profiles are supported for automatic memory tuning. Builders who need four DIMM slots or multiple display outputs should look elsewhere.

Highlights

  • X3D Turbo Mode boosts Ryzen 9000 gaming performance through BIOS optimisation
  • Supports Ryzen 9000, 8000 and 7000 series processors on AM5 socket
  • DDR5 memory up to 7600 MT/s overclocked across two DIMM slots
  • 128 GB maximum system memory capacity with 64 GB per module
  • HDMI 2.1 port delivers 4096×2160 resolution at 60 Hz

Specifications

No published specifications for this item yet.

Questions about this item

What case and power connectors does the Micro-ATX board need to fit?

The board uses the standard Micro-ATX mounting pattern and requires a 24-pin ATX power connector plus an 8-pin CPU power connector for the AM5 socket.

Which BIOS step enables X3D Turbo Mode for Ryzen 9000 series CPUs?

Enter BIOS, navigate to the Tweaker or Advanced menu, enable X3D Turbo Mode, save and exit; the feature then applies its optimisation parameters automatically on every boot.

How much DDR5 memory can be installed across the two DIMM slots?

Two DDR5 DIMM slots support up to 128 GB total system memory with a maximum of 64 GB per single module.

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