AMD Radeon RX 6400
The AMD Radeon RX 6400 is a graphics card released on January 19, 2022, built on the RDNA 2 architecture. It has 768 shading units, 4 GB of GDDR6 memory on a 64-bit bus, 128.0 GB/s of memory bandwidth, a boost clock of 2.32 GHz and a 53 W board power rating. It scores 7,741 in the PassMark G3D benchmark. It supports DirectX 12 Ultimate (FL 12_2) and OpenGL 4.6.
Depth: 55 recorded fields, 18 features, 5 PassMark workloads
Specification data last verified October 1, 2026 against PassMark Videocard Benchmark, AMD.com Specifications and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 10 of 10 tracked specifications recorded.
Performance
The AMD Radeon RX 6400 scores 7,741 in the PassMark G3D benchmark, higher than 86% of the 2,658 GPUs benchmarked (PassMark rank #378), measured across 2,276 submitted results. Its PassMark G2D score is 737.
PassMark workload tests
In the PassMark workload tests the AMD Radeon RX 6400 averages DirectX 9 95 fps, DirectX 10 54 fps, DirectX 11 70 fps, DirectX 12 31 fps and GPU Compute 2,777 ops/s, across 2,276 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.
Theoretical throughput
AMD states a peak of FP32 (single precision) 3.57 TFLOPS, FP16 (half precision) 7.13 TFLOPS, Pixel fill rate 74.3 GPixel/s and Texture fill rate 111.4 GTexel/s for the AMD Radeon RX 6400.
As stated by PassMark
PassMark's own listing for the AMD Radeon RX 6400 states the PCIe 4.0 x4 interface, up to 4 GB of memory, a core clock of 1923 MHz, DirectX 12_2 and OpenGL 4.6, first benchmarked on 2022-04-23. These are PassMark's figures, shown separately from the specification tables above.
Graphics processor
The AMD Radeon RX 6400 is based on the RDNA 2 architecture, uses the Navi 24 graphics processor, contains 5,400 million transistors and has a die size of 107 mm².
Shader configuration
The AMD Radeon RX 6400 has 768 shading units, 12 compute units, 48 texture mapping units, 32 render output units and 12 ray tracing cores.
The AMD Radeon RX 6400 does not use XMX engines; those are specific to Intel Arc graphics.
Clock speeds
The AMD Radeon RX 6400 runs at a base clock of 1.92 GHz, boosts to 2.32 GHz and has a game clock of 2.04 GHz.
Memory
The AMD Radeon RX 6400 is equipped with 4 GB of GDDR6 memory, uses a 64-bit memory bus and delivers 128.0 GB/s of memory bandwidth.
Board and power
The AMD Radeon RX 6400 has a board power rating of 53 W, a total board power of 53 W, a power supply of at least 350 W is recommended, power is supplied through PCIe Powered, the card occupies 1-slot and it connects over PCIe 4.0 x4.
Market
The AMD Radeon RX 6400 was released on January 19, 2022 and launched at a price of $159.
Benchmarks
Graphics and compute APIs
The AMD Radeon RX 6400 supports DirectX 12 Ultimate (FL 12_2) and OpenGL 4.6.
CUDA is an NVIDIA technology and does not apply to the AMD Radeon RX 6400. Feex has no recorded Vulkan version for the AMD Radeon RX 6400. Feex has no recorded OpenCL version for the AMD Radeon RX 6400.
Features
The AMD Radeon RX 6400 has 12 supported features recorded outside the media engine. A feature that no source mentions is shown as not listed, never as unsupported.
Rendering
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Supported: DirectX 12 UltimateMicrosoft's top DirectX 12 feature tier, covering hardware ray tracing, mesh shaders, variable-rate shading and sampler feedback.
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Supported: AMD FidelityFX Super ResolutionAMD's upscaling technology that renders at a lower resolution and scales up to raise frame rates in supported games.
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Supported: Hardware ray tracingDedicated GPU hardware that speeds up ray-traced lighting, reflections and shadows in supported games and apps.Ray tracing units: 12
The AMD Radeon RX 6400 supports DirectX 12 Ultimate, AMD FidelityFX Super Resolution and Hardware ray tracing under Rendering.
Display features
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Supported: AMD FreeSyncSupport for AMD's variable refresh rate technology, which syncs compatible displays to the GPU to reduce tearing and stutter.
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Supported: HDMI 4K outputThe vendor states the GPU can drive a 4K display over HDMI.
Not listed (6)
No source Feex holds states whether the AMD Radeon RX 6400 supports Stereoscopic 3D, 10-bit color output, VR ready, 8K display output, HDR output and 12-bit color output. That is silence, not a statement that they are unsupported.
The AMD Radeon RX 6400 supports AMD FreeSync and HDMI 4K output under Display features.
Platform
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Supported: Resizable BAR AMD Smart Access MemoryLets the CPU access the GPU's full video memory at once, which can improve performance in some games on supporting systems.
Not listed (3)
No source Feex holds states whether the AMD Radeon RX 6400 supports Radeon Dual Graphics, Switchable graphics and AMD SmartShift. That is silence, not a statement that they are unsupported.
The AMD Radeon RX 6400 supports Resizable BAR (AMD Smart Access Memory) under Platform.
Software and drivers
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Supported: Radeon Anti-LagAMD's latency-reduction feature that lowers the delay between input and what you see in supported games.
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Supported: Enhanced SyncAMD driver feature that reduces screen tearing and stutter on displays without variable refresh rate.
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Supported: Image sharpeningA driver-level sharpening filter that increases perceived detail with little performance cost.
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Supported: Radeon BoostAMD driver feature that briefly lowers resolution during fast motion to raise frame rates.
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Supported: Radeon ChillAMD driver feature that lowers frame rate when there is little on-screen action to cut power use and heat.
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Supported: Radeon Super ResolutionAMD's driver-level upscaling that can raise frame rates in many games without game support.
Not listed (2)
No source Feex holds states whether the AMD Radeon RX 6400 supports Radeon ReLive and AMD Fluid Motion Frames. That is silence, not a statement that they are unsupported.
The AMD Radeon RX 6400 supports Radeon Anti-Lag, Enhanced Sync, Image sharpening, Radeon Boost, Radeon Chill and Radeon Super Resolution under Software and drivers.
Media engine
The AMD Radeon RX 6400 provides hardware decode for H.264 (AVC) and HEVC (H.265). It does not support hardware encode for HEVC (H.265) and decode for AV1.
| Codec | Encode | Decode |
|---|---|---|
| H.264 (AVC)4K H.264: encode not supported, decode supported | Not stated by the vendor | Supported |
| HEVC (H.265) | Not supported | Supported |
| AV1 | Not stated by the vendor | Not supported |
supported explicitly not supported not stated by the vendor
Not listed: VP9. No source Feex holds states whether the AMD Radeon RX 6400 supports this codec; that is silence, not a statement that it is unsupported.
Display outputs
The AMD Radeon RX 6400 offers outputs DisplayPort 1.4a, HDMI 2.1 VRR and FRL, HDMI 2.1 and DisplayPort 1.4a.
Frequently asked questions
How much VRAM does the AMD Radeon RX 6400 have?
The AMD Radeon RX 6400 has 4 GB of GDDR6 memory on a 64-bit bus. Its memory bandwidth is 128.0 GB/s.
How much power does the AMD Radeon RX 6400 use and what power supply does it need?
The AMD Radeon RX 6400 has a board power rating of 53 W. Feex records a suggested power supply of at least 350 W. Power connectors: PCIe Powered.
How fast is the AMD Radeon RX 6400?
The AMD Radeon RX 6400 scores 7,741 in the PassMark G3D benchmark, higher than 86% of the 2,658 GPUs benchmarked. Its PassMark rank is #378. In the PassMark DirectX 12 test it averages 31 fps.
Does the AMD Radeon RX 6400 support ray tracing?
Yes. The AMD Radeon RX 6400 has hardware ray tracing with 12 ray tracing cores.
Does the AMD Radeon RX 6400 support DirectX 12 Ultimate?
Yes. The AMD Radeon RX 6400 supports DirectX 12 Ultimate.
What bus interface does the AMD Radeon RX 6400 use?
The AMD Radeon RX 6400 connects over PCIe 4.0 x4.
When was the AMD Radeon RX 6400 released and how much did it cost at launch?
The AMD Radeon RX 6400 was released on January 19, 2022 and launched at a price of $159.