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Biostar B450GT3 micro ATX motherboard, dark PCB with silver heatsinks

Biostar

Biostar B450GT3 AMD motherboard

SKU CH-AGE2-C53JJ

Micro-ATX board with AMD B450 chipset, four DDR4 slots, one M.2 slot, 7.1+2 audio and USB 3.0 header

  • ChipsetAMD B450
  • Form factorMicro ATX
  • Micro ATX form factor fits compact PC builds
  • AMD B450 chipset on AM4 socket
  • Four DDR4 DIMM slots support 64 GB memory
  • 1+2 channel audio for immersive sound
  • One M.2 slot plus USB 3.1 Gen 1 front header

Core platform

The Biostar B450GT3 is a micro ATX motherboard built around the AMD B450 chipset and the AM4 socket. It accepts DDR4 memory across four DIMM slots and provides a single M.2 slot for fast storage. The board targets builders who want a compact foundation for a mainstream desktop without paying for full-size ATX features. It does not suit buyers who need multiple M.2 drives or more than four memory slots.

Build integration

A 24-pin ATX connector and an 8-pin EPS connector feed the board, while two chassis fan headers and a CPU fan header handle case airflow. One USB 3.0 front-panel header and two USB 2.0 headers connect the case front I/O, and an SPDIF output is available for digital audio. The layout frees up space in smaller cases but leaves no room for a second graphics card or additional full-length expansion cards.

Thermals and power

The chipset and VRM area are rated for a 105 W thermal design power, so typical mid-range processors run within spec without extra cooling. Onboard monitoring reports CPU temperature and fan speeds for software control. With no large heatsinks or heatpipes listed, the board relies on case airflow to keep temperatures steady during everyday workloads.

How it compares

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

Price $133.99
Cheaper than about 66% of the 1,906 comparable items (median $224.49).

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Specifications

Processor
ChipsetAMD B450
Size & build
Form factorMicro ATX

Questions about this item

Will the 105 W TDP limit throttle my CPU under sustained load?

The board is rated for 105 W TDP, so a processor drawing more than that continuously will hit the thermal ceiling first.

How loud and hot does the VRM area get when the system runs all day?

With only a 4-pin EPS connector and no heatsink mentioned, the VRMs can run warm and the chassis fans will spin up to compensate.

What memory kits must I already have to populate the four slots?

You need DDR4 DIMM modules; the board provides four slots and no other memory type is supported.

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