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Radeon RX 580 vs Radeon RX 6600

Intro

The Radeon RX 580 comes with a clock speed of 1257 MHz and a GDDR5 memory frequency of 2000 MHz. It also features a 256-bit bus, and makes use of a 14 nm design. It features 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Compare all that to the Radeon RX 6600, which features a clock frequency of 1626 MHz and a GDDR6 memory speed of 1750 MHz. It also uses a 128-bit bus, and uses a 7 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 132 Watts
Radeon RX 580 185 Watts
Difference: 53 Watts (40%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 580 should be 14% quicker than the Radeon RX 6600 in general, because of its greater data rate. (explain)

Radeon RX 580 262144 MB/sec
Radeon RX 6600 229376 MB/sec
Difference: 32768 (14%)

Texel Rate

The Radeon RX 6600 should be a little bit (more or less 1%) better at AF than the Radeon RX 580. (explain)

Radeon RX 6600 182112 Mtexels/sec
Radeon RX 580 181008 Mtexels/sec
Difference: 1104 (1%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6600 is the winner, by far. (explain)

Radeon RX 6600 104064 Mpixels/sec
Radeon RX 580 40224 Mpixels/sec
Difference: 63840 (159%)

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

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Radeon RX 6600

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 580 Radeon RX 6600
Manufacturer AMD AMD
Year April 2017 October 2021
Code Name Polaris 20 Navi 23
Memory 8192 MB 8192 MB
Core Speed 1257 MHz 1626 MHz
Memory Speed 8000 MHz 3500 GB/s
Power (Max TDP) 185 watts 132 watts
Bandwidth 262144 MB/sec 229376 MB/sec
Texel Rate 181008 Mtexels/sec 182112 Mtexels/sec
Pixel Rate 40224 Mpixels/sec 104064 Mpixels/sec
Unified Shaders 2304 1792
Texture Mapping Units 144 112
Render Output Units 32 64
Bus Type GDDR5 GDDR6
Bus Width 256-bit 128-bit
Fab Process 14 nm 7 nm
Transistors 5700 million 11060 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.6

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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

Display Prices

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Radeon RX 580

Amazon.com

Check prices at:

Radeon RX 6600

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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