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Radeon RX 580 vs Radeon RX 590

Intro

The Radeon RX 580 makes use of a 14 nm design. AMD has set the core frequency at 1257 MHz. The GDDR5 RAM works at a frequency of 2000 MHz on this model. It features 2304 SPUs along with 144 TAUs and 32 ROPs.

Compare that to the Radeon RX 590, which comes with a GPU core clock speed of 1469 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also is comprised of 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590 175 Watts
Radeon RX 580 185 Watts
Difference: 10 Watts (6%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so in theory they should have identical performance. (explain)

Texel Rate

The Radeon RX 590 should be a bit (more or less 17%) faster with regards to AF than the Radeon RX 580. (explain)

Radeon RX 590 211536 Mtexels/sec
Radeon RX 580 181008 Mtexels/sec
Difference: 30528 (17%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 590 is the winner, but not by far. (explain)

Radeon RX 590 47008 Mpixels/sec
Radeon RX 580 40224 Mpixels/sec
Difference: 6784 (17%)

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 580

Amazon.com

Radeon RX 590

Amazon.com

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 580 Radeon RX 590
Manufacturer AMD AMD
Year April 2017 November 2018
Code Name Polaris 20 Polaris 30
Memory 8192 MB 8192 MB
Core Speed 1257 MHz 1469 MHz
Memory Speed 8000 MHz 8000 MHz
Power (Max TDP) 185 watts 175 watts
Bandwidth 262144 MB/sec 262144 MB/sec
Texel Rate 181008 Mtexels/sec 211536 Mtexels/sec
Pixel Rate 40224 Mpixels/sec 47008 Mpixels/sec
Unified Shaders 2304 2304
Texture Mapping Units 144 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 14 nm 12 nm
Transistors 5700 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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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

Display Prices

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Radeon RX 580

Amazon.com

Radeon RX 590

Amazon.com

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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