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Radeon RX 550 vs Radeon RX 580

Intro

The Radeon RX 550 comes with a core clock speed of 1100 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 128-bit memory bus, and uses a 14 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

Compare those specifications to the Radeon RX 580, which has GPU clock speed of 1257 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also features 2304 Stream Processors, 144 Texture Address Units, and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 580 13630 points
Radeon RX 550 3507 points
Difference: 10123 (289%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550 50 Watts
Radeon RX 580 185 Watts
Difference: 135 Watts (270%)

Memory Bandwidth

The Radeon RX 580, in theory, should be a lot faster than the Radeon RX 550 overall. (explain)

Radeon RX 580 262144 MB/sec
Radeon RX 550 114688 MB/sec
Difference: 147456 (129%)

Texel Rate

The Radeon RX 580 is much (approximately 414%) faster with regards to texture filtering than the Radeon RX 550. (explain)

Radeon RX 580 181008 Mtexels/sec
Radeon RX 550 35200 Mtexels/sec
Difference: 145808 (414%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 580 is superior to the Radeon RX 550, and very much so. (explain)

Radeon RX 580 40224 Mpixels/sec
Radeon RX 550 17600 Mpixels/sec
Difference: 22624 (129%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon RX 550

Amazon.com

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Radeon RX 580

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon RX 550 Radeon RX 580
Manufacturer AMD AMD
Year April 2017 April 2017
Code Name Polaris 12 Polaris 20
Memory 2048 MB 8192 MB
Core Speed 1100 MHz 1257 MHz
Memory Speed 7000 MHz 8000 MHz
Power (Max TDP) 50 watts 185 watts
Bandwidth 114688 MB/sec 262144 MB/sec
Texel Rate 35200 Mtexels/sec 181008 Mtexels/sec
Pixel Rate 17600 Mpixels/sec 40224 Mpixels/sec
Unified Shaders 512 2304
Texture Mapping Units 32 144
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 14 nm 14 nm
Transistors 2200 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon RX 550

Amazon.com

Check prices at:

Radeon RX 580

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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