AMD Radeon RX 7900 XTX vs AMD Radeon RX 6400

Compare AMD Radeon RX 7900 XTX 24 GB vs AMD Radeon RX 6400 4 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

Benchmark Score
Other Benchmarks
Specifications
Comments (0)
Popular Comparisons

GPU Comparison

Quickly search and compare graphics cards

AMD Radeon RX 6400

Price

The cheapest price from our partner retailers

$ 863.63

$ 130.03

$ 733.60 significantly less expensive

Benchmark Score

Overall Score

General gaming and workstation score

24895 points

1249% significantly better overall score

1845 points

Flux Core frame rate

Volumetric ray casting test, a computationally expensive method of rendering high-quality scenes

529 FPS

487 FPS significantly higher Flux Core frame rate

42 FPS

Electron frame rate

Randomly generated noise sphere test

351 FPS

322 FPS significantly higher Electron frame rate

28 FPS

City frame rate

Procedurally generated city scene with voxel rendering

477 FPS

441 FPS significantly higher City frame rate

36 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

207 FPS

191 FPS significantly higher Clouds frame rate

16 FPS

Free GPU Benchmark

Want to compare your graphics card against the Radeon RX 7900 XTX and the Radeon RX 6400? Download our free and quick PC Performance Test.

Download GPU Benchmark

Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

6837 points

4120% significantly higher 3DMark Graphics score

162 points

Blender score

Cycles Render (Samples per minute)

4050.95 points

1237% significantly higher Blender score

302.98 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

212685 points

533% significantly higher Geekbench 6 (OpenCL) score

33586 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

238996 points

481% significantly higher Geekbench 6 (Vulkan) score

41105 points

Specifications

Core Clock Speed

Nominal chip frequency

1855 MHz

1923 MHz

3% slightly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

2500 MHz

7% slightly higher boost clock speed

2321 MHz

Memory

Onboard memory size for textures and vertices

24 GiB

499% significantly more memory

4 GiB

Memory Bus Width

Number of parallel lines to the memory chips

384 Bit

499% significantly larger memory bus width

64 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

960 GB/s

650% significantly higher memory bandwidth

128 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

355 W

53 W

569% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

480 Gigapixels/s

546% significantly higher pixel rate

74.3 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

960 Gigatexels/s

761% significantly higher texture rate

111.4 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

61.42 TFLOPS

1620% significantly better floating point performance

3.57 TFLOPS

Shading Units

Number of processors dedicated to shader processing

6144

700% significantly more shading units

768

Texture Mapping Units

Number of processors dedicated to applying textures

384

700% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

192

499% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

3rd of 586

217th of 586

Family

The product line

Radeon RX 7000 Series

Radeon RX 6000 Series

Release date

The official date of release of this chip

2022 December

2022 January

Memory Type

The type of memory used by this chip

GDDR6

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.6

Radeon RX 7900 XTX vs Radeon RX 6400 benchmarks

For gaming, the Radeon RX 7900 XTX graphics card is better than the Radeon RX 6400 in our tests.

Our database shows that the Radeon RX 6400 has a slightly higher core clock speed. The core clock speed (or base speed) is the frequency at which the GPU core runs. This metric makes sense when comparing GPUs of a similar architecture or generation. Despite this, the Radeon RX 7900 XTX has a slightly higher boost clock speed. The boost clock speed is the frequency that the GPU core can reach if the temperature is low enough. The allows for higher performance in certain scenarios.

Furthermore, the spec sheet for both these GPUs show that the Radeon RX 7900 XTX has significantly more memory with 24 GiB of memory compared to 4 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, the Radeon RX 6400 has a significantly lower TDP at 53 W when compared to the Radeon RX 7900 XTX at 355 W. TDP (Thermal Design Power) measures total heat output from the chip.

In conclusion, all specs and GPU benchmarks considered, will recommend the Radeon RX 7900 XTX over the Radeon RX 6400.