AMD Radeon RX 6600 XT vs AMD Radeon RX 6400

Compare AMD Radeon RX 6600 XT 8 GB vs AMD Radeon RX 6400 4 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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AMD Radeon RX 6400

Price

The cheapest price from our partner retailers

$ 369.99

$ 130.03

$ 239.96 significantly less expensive

Benchmark Score

Overall Score

General gaming and workstation score

5600 points

203% significantly better overall score

1845 points

Flux Core frame rate

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

116 FPS

74 FPS significantly higher Flux Core frame rate

42 FPS

Electron frame rate

Randomly generated noise sphere test

85 FPS

57 FPS significantly higher Electron frame rate

28 FPS

City frame rate

Procedurally generated city scene with voxel rendering

102 FPS

66 FPS significantly higher City frame rate

36 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

49 FPS

33 FPS significantly higher Clouds frame rate

16 FPS

Free GPU Benchmark

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

9727 points

5904% significantly higher 3DMark Graphics score

162 points

Blender score

Cycles Render (Samples per minute)

1068.60 points

252% significantly higher Blender score

302.98 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

82739 points

146% significantly higher Geekbench 6 (OpenCL) score

33586 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

93271 points

126% significantly higher Geekbench 6 (Vulkan) score

41105 points

Specifications

Core Clock Speed

Nominal chip frequency

1968 MHz

2% slightly higher core clock speed

1923 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2589 MHz

11% slightly higher boost clock speed

2321 MHz

Memory

Onboard memory size for textures and vertices

8 GiB

100% significantly more memory

4 GiB

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

100% significantly larger memory bus width

64 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

256 GB/s

100% significantly higher memory bandwidth

128 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

160 W

53 W

201% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

165.7 Gigapixels/s

123% significantly higher pixel rate

74.3 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

331.4 Gigatexels/s

197% significantly higher texture rate

111.4 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

10.6 TFLOPS

196% significantly better floating point performance

3.57 TFLOPS

Shading Units

Number of processors dedicated to shader processing

2048

166% significantly more shading units

768

Texture Mapping Units

Number of processors dedicated to applying textures

128

166% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

100% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

90th of 586

217th of 586

Family

The product line

Radeon RX 6000 Series

Release date

The official date of release of this chip

2021 November

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 6600 XT vs Radeon RX 6400 specs and performance

In our benchmarks, the Radeon RX 6600 XT beats the Radeon RX 6400 in gaming performance.

In our comparison, the Radeon RX 6600 XT 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. In addition, the Radeon RX 6600 XT also has a slightly higher boost clock speed. This is a frequency that can be reached if the GPU is cooled sufficiently and has enough power.

Furthermore, the spec sheet for both these GPUs show that the Radeon RX 6600 XT has significantly more memory with 8 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 6600 XT at 160 W. This is not a measure of performance, but rather the amount of heat generated by the chip when running at its highest speed.

According to the results of the hardwareDB benchmark utility, the Radeon RX 6600 XT is faster than the Radeon RX 6400.