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Radeon RX 580 vs Radeon RX 6600

Intro

The Radeon RX 580 uses a 14 nm design. AMD has clocked the core speed at 1257 MHz. The GDDR5 RAM works at a speed of 2000 MHz on this model. It features 2304 SPUs as well as 144 TAUs and 32 ROPs.

Compare those specifications to the Radeon RX 6600, which makes use of a 7 nm design. AMD has set the core frequency at 1626 MHz. The GDDR6 memory runs at a frequency of 1750 MHz on this specific model. It features 1792 SPUs along with 112 Texture Address Units 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

The Radeon RX 580 should theoretically be a bit faster than the Radeon RX 6600 in general. (explain)

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

Texel Rate

The Radeon RX 6600 will be just a bit (approximately 1%) more effective 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

The Radeon RX 6600 should be quite a bit (about 159%) better at full screen anti-aliasing than the Radeon RX 580, and will be capable of handling higher resolutions without slowing down too much. (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 largest amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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