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Compact low-profile graphics card with dual fans and matte black finish

GIGABYTE

GIGABYTE GV-R64D6-4GL Radeon RX 6400 graphics card

SKU CH-VZ0P-MKP1Q MPN GV-R64D6-4GL

Low-profile Radeon graphics card with 4GB GDDR6 memory, 768 stream processors and a 2321 MHz boost clock for compact 1080p builds

  • InterfacePCI Express 4.0
  • Chipset ManufacturerAMD
  • GPU SeriesAMD Radeon RX 6000 Series
  • GPURadeon RX 6400
  • ArchitectureRDNA 2
  • Game Clock2039 MHz
  • Low-profile design fits compact builds with a 182 mm card length
  • Dual-fan cooler handles the 53 W thermal design power quietly
  • HDMI 2.1 and DisplayPort 1.4 drive two displays up to 7680 x 4320
  • 4 GB GDDR6 memory on a 64-bit interface feeds the 768 stream processors
  • PCI Express 4.0 interface and RDNA 2 architecture enable the 2321 MHz boost clock

Low-Profile RX 6400 Card

The GIGABYTE GV-R64D6-4GL is a low-profile graphics card built on the AMD Radeon RX 6400 GPU with 768 stream processors. It targets compact systems that need a PCI Express 4.0 add-in board for 1080p gaming or multi-monitor productivity. The 4GB GDDR6 frame buffer and 64-bit memory interface keep the physical footprint small while supporting modern display outputs.

Sustained 53W Load Behaviour

With a 53W thermal design power the card draws modest energy under continuous load. The game clock of 2039 MHz is the typical operating frequency during extended sessions, while the 2321 MHz boost clock appears only in short bursts. The 16000 MHz effective memory clock feeds the 64-bit bus steadily, so frame-times remain consistent without aggressive throttling.

Dual-Fan Cooling at 53W

A dual-fan cooler handles the 53W heat load in a two-slot, 182 mm long form factor. At typical gaming power the fans spin at low RPM, keeping acoustic output quiet for living-room or office builds. A 350W power supply is sufficient for the whole system, and the single 8-pin connector is not required, simplifying cable routing in tight chassis.

Highlights

  • Low-profile design fits compact builds with a 182 mm card length
  • Dual-fan cooler handles the 53 W thermal design power quietly
  • HDMI 2.1 and DisplayPort 1.4 drive two displays up to 7680 x 4320
  • 4 GB GDDR6 memory on a 64-bit interface feeds the 768 stream processors
  • PCI Express 4.0 interface and RDNA 2 architecture enable the 2321 MHz boost clock

Specifications

BrandGIGABYTE
ModelGV-R64D6-4GL
InterfacePCI Express 4.0
Chipset ManufacturerAMD
GPU SeriesAMD Radeon RX 6000 Series
GPURadeon RX 6400
ArchitectureRDNA 2
Game Clock2039 MHz
Boost Clock2321 MHz
Stream Processors768
Effective Memory Clock16000 MHz
Memory Size4GB
Memory Interface64-Bit
Memory TypeGDDR6
DirectXDirectX 12 Ultimate
OpenGLOpenGL 4.6
Multi-Monitor Support2
HDMI1 x HDMI 2.1
DisplayPort1 x DisplayPort 1.4
Max Resolution7680 x 4320
CoolerDouble Fans
Thermal Design Power53W
Recommended PSU Wattage350W
FeaturesPowered by AMD RDNA 2 Radeon RX 6400
Integrated with 4GB GDDR6 64-bit memory interface
Low profile design
Form FactorLow Profile
Max GPU Length182 mm
Card Dimensions (L x H)7.17" x 2.72"
Slot Width2 Slots
Shipping weight0.54 kg
Package size292 × 211 × 51 mm

Questions about this item

How much heat does the 53 W TDP put into a case that runs all day?

The card draws 53 W at its thermal design power, so a 350 W power supply is recommended and a standard low-profile cooler with two fans handles the heat.

What slot and power connectors must my motherboard and PSU provide for this RX 6400?

You need a PCI Express 4.0 x16 slot and a 350 W power supply; the board draws all power from the slot so no extra PCIe cables are required.

Will the 64-bit GDDR6 memory and PCI Express 4.0 link limit performance on an older PCIe 3.0 system?

The card uses a PCI Express 4.0 x4 electrical interface, so on a PCIe 3.0 motherboard bandwidth is halved, which can reduce frame rates in memory-heavy titles.

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