AMD · Radeon Pro

AMD Radeon PRO W6400

The AMD Radeon PRO W6400 is a workstation graphics card released on January 19, 2022, built on the RDNA 2 architecture using a 6 nm process. 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 2.33 GHz and a 50 W board power rating. It scores 8,385 in the PassMark G3D benchmark. It supports DirectX 12 Ultimate (FL 12_1), OpenGL 4.6, Vulkan 1.2 and OpenCL 2.2.

RDNA 2Navi 246 nmWorkstation

10/10 key specs recorded · 68 facts

Depth: 48 recorded fields, 7 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.

PassMark Videocard Benchmark AMD.com Specifications Wikipedia GPU list tables (wikigrid-2026-09)PassMark Videocard Benchmark

Shading units

768cores

12 compute units

Memory

4 GB

GDDR6 · 64-bit

Boost clock

2.33 GHz

2.04 GHz base

Board power

50 W

Performance

The AMD Radeon PRO W6400 scores 8,385 in the PassMark G3D benchmark, higher than 86.9% of the 2,658 GPUs benchmarked (PassMark rank #357), measured across 172 submitted results. Its PassMark G2D score is 900.

PassMark G3D Mark

8,385

Rank #357
Faster than 86.9% of 2,658 GPUs
172 samples

0relative to the fastest GPU on record (41,928)

PassMark workload tests

DirectX 9 120 fps

reference: fastest recorded 526 fps · faster than 79% of 1,675 GPUs

DirectX 10 55 fps

reference: fastest recorded 231 fps · faster than 78% of 1,602 GPUs

DirectX 11 71 fps

reference: fastest recorded 362 fps · faster than 78% of 1,430 GPUs

DirectX 12 31 fps

reference: fastest recorded 213 fps · faster than 67.4% of 1,274 GPUs

GPU Compute 3,008 ops/s

reference: fastest recorded 26,591 ops/s · faster than 73.9% of 1,447 GPUs

Averages of PassMark PerformanceTest submissions; frames/sec are PassMark test-scene rates, not game FPS. Tests PassMark does not report for this card are omitted. PassMark listing

In the PassMark workload tests the AMD Radeon PRO W6400 averages DirectX 9 120 fps, DirectX 10 55 fps, DirectX 11 71 fps, DirectX 12 31 fps and GPU Compute 3,008 ops/s, across 172 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

Theoretical throughput

FP32 (single precision) 3.5 TFLOPS stated by AMD

FP16 (half precision) 7.07 TFLOPS stated by AMD

Pixel fill rate 74.592 GPixel/s calculatedcalculated from ROPs x boost clock (MHz) / 1000 = 32 x 2331 / 1000

Texture fill rate 111.888 GTexel/s calculatedcalculated from TMUs x boost clock (MHz) / 1000 = 48 x 2331 / 1000

AMD states a peak of FP32 (single precision) 3.5 TFLOPS and FP16 (half precision) 7.07 TFLOPS for the AMD Radeon PRO W6400. Pixel fill rate (74.592 GPixel/s) and Texture fill rate (111.888 GTexel/s) are calculated by Feex from stored specifications, not stated by AMD.

As stated by PassMark

First benchmarked 2022-04-07

Samples 172

PassMark listing (collected 2026-10-01)

Graphics processor

Architecture RDNA 2

Codename Navi 24

Chip Not recorded

Process node 6 nm

Transistors 5,400 M

Die size 107 mm²

The AMD Radeon PRO W6400 is based on the RDNA 2 architecture, uses the Navi 24 graphics processor, is manufactured on a 6 nm process, contains 5,400 million transistors and has a die size of 107 mm².

Shader configuration

Shading units 768

Compute units 12

Streaming multiprocessors Not recorded

Execution units Not recorded

Texture units (TMUs) 48

Render output units (ROPs) 32

Ray tracing cores 12

Tensor / AI cores Not recorded

XMX engines Not recorded

Infinity cache Not recorded

The AMD Radeon PRO W6400 has 768 shading units, 12 compute units, 48 texture mapping units, 32 render output units and 12 ray tracing cores.

The AMD Radeon PRO W6400 does not use XMX engines; those are specific to Intel Arc graphics.

Clock speeds

Base clock 2.04 GHz

Boost clock 2.33 GHz

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The AMD Radeon PRO W6400 runs at a base clock of 2.04 GHz and boosts to 2.33 GHz.

Memory

Size 4 GB

Type GDDR6

Bus width 64-bit

Bandwidth 128.0 GB/s

The AMD Radeon PRO W6400 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 PRO W6400 has a board power rating of 50 W, a total board power of 50 W, power is supplied through None, the card occupies 1-slot, it is 168 mm long, cooling is Active and it connects over PCIe 4.0 x4.

Board power (TDP) 50 W

Total board power 50 W

Suggested PSU Not recorded

Power connectors None

Slot width 1-slot

Length 168 mm

Width Not recorded

Height Not recorded

Cooler Active

Max temperature Not recorded

Bus interface PCIe 4.0 x4

Market

Launched January 19, 2022

Launch price $229

Status Not recorded

Form factor PCIe Add-in Card

Segment Workstation

Series Radeon Pro

The AMD Radeon PRO W6400 was released on January 19, 2022 and launched at a price of $229.

Benchmarks

PassMark G3D 8,385

PassMark G2D 900

Rank #357

Samples 172

Graphics and compute APIs

The AMD Radeon PRO W6400 supports DirectX 12 Ultimate (FL 12_1), OpenGL 4.6, Vulkan 1.2 and OpenCL 2.2.

DirectX 12 Ultimate (FL 12_1)

OpenGL 4.6

Vulkan 1.2

OpenCL 2.2

CUDA is an NVIDIA technology and does not apply to the AMD Radeon PRO W6400.

Features

The AMD Radeon PRO W6400 has 6 supported features recorded and 1 feature explicitly listed as not supported outside the media engine. A feature that no source mentions is shown as not listed, never as unsupported.

Rendering

Supported: DirectX 12 Ultimate

Microsoft's top DirectX 12 feature tier, covering hardware ray tracing, mesh shaders, variable-rate shading and sampler feedback.
Supported: AMD FidelityFX Super Resolution

AMD's upscaling technology that renders at a lower resolution and scales up to raise frame rates in supported games.
Supported: Hardware ray tracing

Dedicated GPU hardware that speeds up ray-traced lighting, reflections and shadows in supported games and apps.

Ray tracing units: 12

The AMD Radeon PRO W6400 supports DirectX 12 Ultimate, AMD FidelityFX Super Resolution and Hardware ray tracing under Rendering.

Compute and AI

Not supported (1)

Explicitly not supported: ECC memory

What it is: Error-correcting memory that detects and fixes memory bit errors, mainly valued in workstation and data-center use.

Not listed (3)

No source Feex holds states whether the AMD Radeon PRO W6400 supports AMD AI accelerators, Tensor cores and AMD CrossFire. That is silence, not a statement that they are unsupported.

ECC memory is explicitly listed as not supported.

Display features

Supported: 10-bit color output

The GPU can send 10-bit-per-channel color to compatible displays for smoother gradients.
Supported: Stereoscopic 3D

Support for stereoscopic 3D output to compatible displays.
Supported: VR ready Radeon VR Ready Creator

The vendor states the GPU meets the requirements for running mainstream PC virtual reality headsets.

Not listed (5)

No source Feex holds states whether the AMD Radeon PRO W6400 supports HDMI 4K output, AMD FreeSync, 8K display output, HDR output and 12-bit color output. That is silence, not a statement that they are unsupported.

The AMD Radeon PRO W6400 supports 10-bit color output, Stereoscopic 3D and VR ready (Radeon VR Ready Creator) under Display features.

Display outputs

The AMD Radeon PRO W6400 offers outputs 2x DisplayPort 1.4 with DSC and Audio Support and DisplayPort 1.4.

Outputs 2x DisplayPort 1.4 with DSC and Audio Support

DisplayPort 1.4

Frequently asked questions

How much VRAM does the AMD Radeon PRO W6400 have?

The AMD Radeon PRO W6400 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 PRO W6400 use and what power supply does it need?

The AMD Radeon PRO W6400 has a board power rating of 50 W. Power connectors: None.

How fast is the AMD Radeon PRO W6400?

The AMD Radeon PRO W6400 scores 8,385 in the PassMark G3D benchmark, higher than 86.9% of the 2,658 GPUs benchmarked. Its PassMark rank is #357. In the PassMark DirectX 12 test it averages 31 fps.