AMD Radeon RX 580X vs AMD Radeon RX 6900 XT

Compare AMD Radeon RX 580X 8 GB vs AMD Radeon RX 6900 XT 16 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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Specifications
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Benchmark Score

Overall Score

General gaming and workstation score

2318 points

14121 points

509% significantly better overall score

Flux Core frame rate

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

47 FPS

286 FPS

239 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

35 FPS

208 FPS

173 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

51 FPS

257 FPS

206 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

19 FPS

122 FPS

103 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

41822 points

170008 points

306% significantly higher Geekbench 5 (OpenCL) score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

41822 points

167644 points

300% significantly higher Geekbench 6 (OpenCL) score

Specifications

Core Clock Speed

Nominal chip frequency

1257 MHz

1825 MHz

45% significantly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

1340 MHz

2250 MHz

67% significantly higher boost clock speed

Memory

Onboard memory size for textures and vertices

8 GiB

16 GiB

100% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

256 Bit

Identical

256 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

256 GB/s

512 GB/s

100% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

185 W

62% significantly lower TDP

300 W

Pixel Rate

Number of pixels that can be rendered per second

42.88 Gigapixels/s

288 Gigapixels/s

571% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

192.96 Gigatexels/s

720 Gigatexels/s

273% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

6.18 TFLOPS

23.04 TFLOPS

273% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

2304

5120

122% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

144

320

122% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

128

300% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

189th of 586

24th of 586

Family

The product line

Radeon RX 500X Series

Radeon RX 6000 Series

Release date

The official date of release of this chip

2018 March

2020 August

Memory Type

The type of memory used by this chip

GDDR5

GDDR6

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.6

Radeon RX 580X vs Radeon RX 6900 XT comparison

In our benchmarks, the Radeon RX 6900 XT beats the Radeon RX 580X in gaming performance.

The Radeon RX 6900 XT has a significantly 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. In addition, the Radeon RX 6900 XT also has a significantly 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.

Next up, in terms of GPU memory, the Radeon RX 6900 XT has significantly more memory with 16 GiB of memory compared to 8 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, the Radeon RX 580X has a significantly lower TDP at 185 W when compared to the Radeon RX 6900 XT at 300 W. TDP (Thermal Design Power) measures total heat output from the chip.

In terms of raw gaming performance in our GPU benchmark, the Radeon RX 6900 XT is better than the Radeon RX 580X.