AMD Radeon RX 6600 XT vs AMD Radeon RX 580 2048SP

Compare AMD Radeon RX 6600 XT 8 GB vs AMD Radeon RX 580 2048SP, 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

5600 points

205% significantly better overall score

1836 points

Flux Core frame rate

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

116 FPS

79 FPS significantly higher Flux Core frame rate

37 FPS

Electron frame rate

Randomly generated noise sphere test

85 FPS

58 FPS significantly higher Electron frame rate

27 FPS

City frame rate

Procedurally generated city scene with voxel rendering

102 FPS

62 FPS significantly higher City frame rate

40 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

49 FPS

34 FPS significantly higher Clouds frame rate

14 FPS

Free GPU Benchmark

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

9727 points

150% significantly higher 3DMark Graphics score

3877 points

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

82559 points

103% significantly higher Geekbench 5 (OpenCL) score

40609 points

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

64460 points

70% significantly higher Geekbench 5 (Vulkan) score

37797 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

82739 points

140% significantly higher Geekbench 6 (OpenCL) score

34371 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

93271 points

103% significantly higher Geekbench 6 (Vulkan) score

45743 points

Specifications

Core Clock Speed

Nominal chip frequency

1968 MHz

68% significantly higher core clock speed

1168 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2589 MHz

101% significantly higher boost clock speed

1284 MHz

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

256 Bit

100% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

256 GB/s

14% slightly higher memory bandwidth

224 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

160 W

150 W

6% slightly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

165.7 Gigapixels/s

303% significantly higher pixel rate

41.09 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

331.4 Gigatexels/s

101% significantly higher texture rate

164.4 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

10.6 TFLOPS

101% significantly better floating point performance

5.26 TFLOPS

Shading Units

Number of processors dedicated to shader processing

2048

Identical

2048

Texture Mapping Units

Number of processors dedicated to applying textures

128

Identical

128

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

218th of 586

Family

The product line

Radeon RX 6000 Series

Release date

The official date of release of this chip

2021 November

2018 October

Memory Type

The type of memory used by this chip

GDDR6

GDDR5

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 580 2048SP comparison

In our benchmarks, the Radeon RX 6600 XT beats the Radeon RX 580 2048SP in gaming performance.

The Radeon RX 6600 XT has a significantly 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 significantly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.

In addition, the Radeon RX 580 2048SP has a slightly lower TDP at 150 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.

In terms of raw gaming performance in our GPU benchmark, the Radeon RX 6600 XT is better than the Radeon RX 580 2048SP.