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Green micro-ATX board, silver heatsinks, black slots, rear I/O shield

GIGABYTE

GIGABYTE B840M DS3H AMD motherboard

SKU CH-Q30F-6D34N

Micro-ATX board for AMD Ryzen 7000, 8000 and 9000 CPUs with 8+2+2 phase VRM, DDR5 to 8200 MHz, two PCIe 4.0 M.2 slots, 2.5 GbE LAN and USB 3.2 Gen 1

  • Supports Ryzen 9000, 8000 and 7000 series processors for broad CPU choice
  • 8+2+2 phase digital VRM delivers stable power to the CPU
  • DDR5 memory up to 8200 MHz enables high-speed dual-channel performance
  • Two PCIe 4.0 M.2 slots provide ultra-fast storage expansion
  • 5 GbE LAN gives faster wired networking than standard gigabit

B840M DS3H AM5 Motherboard

The GIGABYTE B840M DS3H is a micro-ATX board built for AMD Socket AM5 processors. It accepts Ryzen 9000, 8000 and 7000 series CPUs and delivers power through an 8+2+2 phase digital VRM. Four DDR5 slots support speeds up to 8200MHz with AMD EXPO modules. Connectivity includes 2.5GbE LAN and USB 3.2 Gen 1 ports.

Best for single-GPU builds with two fast drives

This board suits builders who want a compact platform for one graphics card and up to two PCIe 4.0 M.2 SSDs. The single full-length PCIe x16 slot uses an EZ-Latch quick-release mechanism. Buyers who need multiple graphics cards, more than two M.2 slots or additional high-speed USB standards should look at larger chipsets.

8+2+2 phase digital VRM for Ryzen 9000 series

The power delivery uses an 8+2+2 phase digital design rated for the Ryzen 9000 series. This specification determines whether the board can sustain high clocks on the supported CPUs. If your chosen processor demands more phases or higher current per phase, this model will not meet that requirement.

Highlights

  • Supports Ryzen 9000, 8000 and 7000 series processors for broad CPU choice
  • 8+2+2 phase digital VRM delivers stable power to the CPU
  • DDR5 memory up to 8200 MHz enables high-speed dual-channel performance
  • Two PCIe 4.0 M.2 slots provide ultra-fast storage expansion
  • 5 GbE LAN gives faster wired networking than standard gigabit

Specifications

No published specifications for this item yet.

Questions about this item

What limits sustained performance when the VRM runs at full load?

The digital 8+2+2 phase VRM handles power delivery, so thermal limits depend on your cooler and case airflow rather than a fixed board rating

How much power does the board itself draw during continuous operation?

The board draws only the power needed for its 2.5GbE LAN, USB 3.2 Gen 1 ports and VRM logic — actual draw varies with the CPU and memory you install

Which components must already be in the system for this motherboard to function?

You need an AMD Ryzen 7000, 8000 or 9000 series processor, DDR5 memory modules, a power supply with 24-pin and CPU power connectors, and storage drives for the M.2 slots

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