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Radeon RX 580 vs Radeon RX 7900 XT

Intro

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

Compare all that to the Radeon RX 7900 XT, which features clock speeds of 1500 MHz on the GPU, and 2500 MHz on the 20480 MB of GDDR6 RAM. It features 5376 SPUs as well as 336 Texture Address Units and 192 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580 185 Watts
Radeon RX 7900 XT 300 Watts
Difference: 115 Watts (62%)

Memory Bandwidth

Theoretically, the Radeon RX 7900 XT should perform quite a bit faster than the Radeon RX 580 overall. (explain)

Radeon RX 7900 XT 819200 MB/sec
Radeon RX 580 262144 MB/sec
Difference: 557056 (213%)

Texel Rate

The Radeon RX 7900 XT should be quite a bit (about 178%) faster with regards to anisotropic filtering than the Radeon RX 580. (explain)

Radeon RX 7900 XT 504000 Mtexels/sec
Radeon RX 580 181008 Mtexels/sec
Difference: 322992 (178%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 7900 XT is superior to the Radeon RX 580, by a large margin. (explain)

Radeon RX 7900 XT 288000 Mpixels/sec
Radeon RX 580 40224 Mpixels/sec
Difference: 247776 (616%)

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 7900 XT

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 7900 XT
Manufacturer AMD AMD
Year April 2017 December 2022
Code Name Polaris 20 Navi 31 XT
Memory 8192 MB 20480 MB
Core Speed 1257 MHz 1500 MHz
Memory Speed 8000 MHz 5000 GB/s
Power (Max TDP) 185 watts 300 watts
Bandwidth 262144 MB/sec 819200 MB/sec
Texel Rate 181008 Mtexels/sec 504000 Mtexels/sec
Pixel Rate 40224 Mpixels/sec 288000 Mpixels/sec
Unified Shaders 2304 5376
Texture Mapping Units 144 336
Render Output Units 32 192
Bus Type GDDR5 GDDR6
Bus Width 256-bit 320-bit
Fab Process 14 nm 5 nm
Transistors 5700 million 57700 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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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

Display Prices

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Radeon RX 580

Amazon.com

Check prices at:

Radeon RX 7900 XT

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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