AMD Radeon RX 6400 vs AMD Radeon RX 7800 XT

Compare AMD Radeon RX 6400 4 GB vs AMD Radeon RX 7800 XT 16 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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Gaming
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Specifications
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AMD Radeon RX 7800 XT

Price

The cheapest price from our partner retailers

$ 130.03

$ 532.96 significantly less expensive

$ 662.99

Benchmark Score

Overall Score

General gaming and workstation score

1845 points

15475 points

738% significantly better overall score

Flux Core frame rate

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

42 FPS

326 FPS

284 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

28 FPS

216 FPS

187 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

36 FPS

295 FPS

259 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

16 FPS

127 FPS

111 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Gaming Benchmarks

Cyberpunk 2077 FPS

Ultra settings at 1080p

59 FPS

86 FPS

27 FPS significantly higher Cyberpunk 2077 FPS

Red Dead Redemption 2 FPS

Ultra settings at 1080p

42 FPS

115 FPS

73 FPS significantly higher Red Dead Redemption 2 FPS

Fortnite FPS

Low settings at 1080p

171 FPS

287 FPS

116 FPS significantly higher Fortnite FPS

Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

162 points

4154 points

2464% significantly higher 3DMark Graphics score

Blender score

Cycles Render (Samples per minute)

302.98 points

2429.25 points

701% significantly higher Blender score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

33586 points

142590 points

324% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

41105 points

157875 points

284% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1923 MHz

6% slightly higher core clock speed

1800 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2321 MHz

2430 MHz

4% slightly higher boost clock speed

Memory

Onboard memory size for textures and vertices

4 GiB

16 GiB

300% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

64 Bit

256 Bit

300% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

128 GB/s

624 GB/s

387% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

53 W

396% significantly lower TDP

263 W

Pixel Rate

Number of pixels that can be rendered per second

74.3 Gigapixels/s

233 Gigapixels/s

213% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

111.4 Gigatexels/s

583 Gigatexels/s

423% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

3.57 TFLOPS

36.04 TFLOPS

909% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

768

8192

966% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

240

400% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

200% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

217th of 586

17th of 586

Family

The product line

Radeon RX 6000 Series

Radeon RX 7000 Series

Release date

The official date of release of this chip

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 6400 vs Radeon RX 7800 XT comparison

In our benchmarks, the Radeon RX 7800 XT beats the Radeon RX 6400 in gaming performance.

The Radeon RX 6400 has a slightly higher core clock speed. This is the frequency at which the graphics core is running at. While not necessarily an indicator of overall performance, this metric can be useful when comparing two GPUs based on the same architecture. Despite this, the Radeon RX 7800 XT 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 7800 XT has significantly more memory with 16 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 7800 XT at 263 W. This is not a measure of performance, but rather the amount of heat generated by the chip when running at its highest speed.

In conclusion, all specs and GPU benchmarks considered, will recommend the Radeon RX 7800 XT over the Radeon RX 6400.