The Launch of the SAPPHIRE PULSE AMD Radeon™ RX 6400 Graphics Card Enables Efficient 1080p Gaming with Robust Cooling and a Contemporary Design


Step Up Your 1080p Gaming Experience

Key Features:

  • Up to 2321 MHz Boost Clock and 2039 MHz Game Clock
  • Streamlined 1080p gaming
  • Aerodynamic and Efficient Axial Fan Cooling Technology
  • Ideal for Single Slot Low-Profile PC Builds
  • Fully leverage game frames by enabling TriXX Boost
  • AAA 1080p gaming powered by AMD RDNA™ 2 gaming architecture, AMD Infinity Cache™ memory technology, AMD Smart Access Memory™ technology 3 and DirectX® 12 Ultimate support

SAPPHIRE Technology announces the new PULSE AMD Radeon™ RX 6400 Graphics Card with quiet and efficient 1080p gaming graphics. With a compact, single slot low-profile design with classic PULSE red accents, it is an ideal component for small form factor builds. Enable TriXX Boost on the PULSE AMD Radeon RX 6400 Graphics Card to maximize gaming experience with a boost in frames.

PULSE: The Heart. The Beat. The Game.  

Built using 6nm process technology, the PULSE AMD Radeon RX 6400 Graphics Card headlines with 768 stream processors running with a Boost Clock of up to 2321 MHz and a Game Clock of up to 2039 MHz. The latest GDDR6 high-speed memory clocked at 16 Gbps Effective, with 16 MB of AMD Infinity Cache™ memory technology, which reduces latency and power consumption, enabling high overall gaming performance. To support the latest display monitors in the market, it is equipped with output ports including HDMITM and Display Port 1.4 with DSC outputs. The PULSE AMD Radeon RX 6400 Graphics Card series features 12 powerful Compute Units and 12 Ray Accelerators.

SAPPHIRE PULSE AMD Radeon RX 6400 Graphics Card, 4GB, AMD RDNA™ 2 Gaming Architecture


Optimized Axial Fan Cooling Technology

The superb cooling of the PULSE AMD Radeon RX 6400 Graphics Card is powered by the dynamic Axial Fan Cooling Technology equipped with seven blades to create a quiet and cool gaming experience. The Fuse Protection feature is engineered into the circuit of the external PCIe® power connector to preserve the components and protect the graphics card.


SAPPHIRE PULSE AMD Radeon™ RX 6400 Graphics Card, 4GB, AMD RDNA™ 2 Gaming Architecture

Compact Aesthetic & Engineering

The SAPPHIRE PULSE AMD Radeon RX 6400 Graphics Card is engineered to be a neat fit into small form factor and mini-ITX PC builds. It is the perfect system integration as it is equipped with a single slot low-profile design with proper cooling for your gaming experience. The signature PULSE red accents are a stylish addition for every gamer looking for a chassis with a strong gaming aesthetic.


SAPPHIRE PULSE AMD Radeon™ RX 6400, 4GB, AMD RDNA™ 2 Gaming Architecture

TriXX Boost

Gain the ultimate performance on the PULSE AMD Radeon RX 6400 Graphics Cards with SAPPHIRE TriXX Software. On a variety of games, TriXX Boost increases FPS by slightly decreasing resolution through theTriXX software that is then adjusted through AMD Radeon Image Sharpening for a significant performance boost. Choose from a customizable resolution scale or from additional custom resolutions based on user input for a much more fine-grained control over the quality vs. performance tradeoff.

Breakthrough Gaming with Powerful Radeon Features

The SAPPHIRE PULSE AMD Radeon RX 6400 Graphics Card comes equipped with powerful AMD Radeon features that elevate 1080p gaming, including:

AMD RDNA 2 Gaming Architecture

ONE GAMING DNA – AMD RDNA 2 gaming architecture, the only gaming architecture that spans from next-generation desktop PCs, laptops and consoles to mobile devices and automotive infotainment systems, is designed to deliver the optimal combination of performance and power efficiency.  

AMD Infinity Cache Memory Technology

HIGHLY EFFICIENT HIGH-PERFORMANCE BANDWIDTH - 16MB of AMD Infinity Cache memory technology enables high bandwidth performance at low power and low latency.

Future-Ready Gaming with up to 4GB GDDR6

MEMORY FOR ALL TEXTURES - Crunch through game textures with 4 GB GDDR6 memory. Get equipped to play the newest games at high settings.

AMD Smart Access Memory™ Technology

PERFORMANCE ABOVE AND BEYOND WITH RYZEN™ PROCESSORS + RADEON GRAPHICS - Get more performance in select titles through new levels of communication between AMD Ryzen desktop processors and AMD Radeon graphics cards over PCI Express®.

DirectX® 12 Ultimate Support

NEW LEVEL OF IMMERSION - Takes games to a new level of realism with support for features such as DirectX Raytracing (DXR) and Variable Rate Shading.

DirectX Raytracing (DXR)

REAL TIME LIGHTING, SHADOWS, & REFLECTIONS - AMD Radeon RX 6400 Graphics Cards with enhanced AMD RDNA 2 compute units, are optimized to deliver lighting, shadow, and reflection realism with DirectX Raytracing, the new standard for next generation gaming visuals to increase visual quality in gaming.

Variable Rate Shading (VRS)

DETAIL WHERE IT MATTERS - Variable Rate Shading (VRS) technology accelerates the level of detail where it matters. By selectively choosing where to allocate GPU resources, performance and immersion can be optimized.

AMD FidelityFX™ Technology

OPEN-SOURCE VISUAL ENHANCEMENT SUITE - AMD FidelityFX technology is an open-source toolkit of visual enhancement effects for game developers available at AMD GPUOpen. AMD FidelityFX Super Resolution open-source spatial upscaling solution is designed to boost framerates and deliver high-quality, high-resolution gaming experiences.

AMD Radeon Super Resolution (RSR)

NEW DRIVER-BASED UPSCALING TECHNOLOGY - unleashes increased levels of performance with high-quality visuals and is compatible with thousands of games.

AMD Image Sharpening Technologies

CRISP DETAILS – AMD Radeon Image Sharpening (RIS)4 or AMD FidelityFX Contrast Adaptive Sharpening (CAS) deliver clearer images on high resolution displays with virtually no performance impact.

AMD Radeon Anti-Lag Technology

ULTRA-FAST RESPONSES TO YOUR EVERY MOVE – AMD Radeon Anti-Lag technology helps reduce lag by intelligently controlling the queuing of CPU work ahead of GPU work across thousands of games running on DirectX® 9, 11 and 12 APIs.

AMD Radeon Boost Technology with Support for VRS

TURBOCHARGE YOUR GAME – AMD Radeon Boost technology now takes advantage of the Variable Rate Shading hardware found on the AMD Radeon RX 6000 Series graphics cards in select titles. It selectively reduces the shading rates in certain areas of a frame as characters are turned and rotated in gameplay, delivering extra performance and increased responsiveness, with little effect on visual quality.

AMD FreeSync™ Technology

NO STUTTERING. NO TEARING. JUST GAMING. - Take full advantage of the AMD Radeon RX 6400 Graphics Card by pairing with a certified AMD FreeSync technology-enabled monitor to enable an exceptional stutter and tear-free gaming experience with high refresh rates, low latency, and stunning HDR.

HDMI™ 2.1

EXPANDING DISPLAY CAPABILITIES – The AMD Radeon RX 6400 Graphics Card enables connectivity and support the newest bleeding-edge displays. HDMI™ 2.1 VRR expands tear-free gaming experiences to all HDMI 2.1 VRR-enabled displays delivering fluid gaming for all AMD Radeon RX 6400 GPU users.



The SAPPHIRE PULSE AMD Radeon RX 6400 Graphics Card is shipping now, and will be available from selected SAPPHIRE e-tailers and retailers worldwide.


PULSE AMD Radeon RX 6400, 4GB, AMD RDNA 2 Gaming Architecture


6nm GPU, AMD RDNA 2 Gaming Architecture

Compute Units


Boost Clock

Up to 2321 MHz

Game Clock

Up to 2039 MHz

Ray Accelerators


AMD Infinity Cache


Memory Size/Bus

4GB/64 bit GDDR6

Memory Clock

16 Gbps Effective


Maximum 2 Displays


HDMI™: 7680×4320
DisplayPort1.4: 7680×4320


PCI-Express 4.0 x4


1x DisplayPort

BIOS Support


Game Index



Fuse Protection

Dual Ball Bearing Fans

Axial Fan Cooling Technology

TriXX Supported

TriXX Boost

ATX Bracket Accessory

AMD Features

AMD RDNA 2 Gaming Architecture

DirectX 12 Ultimate support

AMD Smart Access Memory Technology

AMD Infinity Cache Memory Technology

6nm GPU

PCI Express 4.0 Support

AMD FreeSync Technology

DisplayPort 1.4 with DSC

HDMI support

Video Streaming up to 8K

AMD Radeon VR Ready Premium

AMD FidelityFX

AMD Radeon Image Sharpening

AMD Radeon Anti-Lag

AMD Software: Adrenalin Edition

Game Driver Optimizations


Axial Fan Cooling

Form Factor

1 slot, ATX

Dimension: 170 x 56.2 x 17.2 (mm)

Power Consumption

55W Board Power


Linux®, Windows® 7*, and Windows® 10, Windows® 11 64-bit operating system required

*Does not support all features including but not limited to Hardware Raytracing

System Requirements

Minimum 350-Watt Power Supply

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard.

Minimum 8GB of system memory. 16GB recommended.

A display with HDMI or DisplayPort is required



SAPPHIRE Technology