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Radeon RX 590 vs Radeon RX 6600 XT

Intro

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

Compare that to the Radeon RX 6600 XT, which features a clock speed of 1968 MHz and a GDDR6 memory frequency of 2000 MHz. It also features a 128-bit memory bus, and makes use of a 7 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT 160 Watts
Radeon RX 590 175 Watts
Difference: 15 Watts (9%)

Memory Bandwidth

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

Texel Rate

The Radeon RX 6600 XT should be a little bit (approximately 19%) faster with regards to anisotropic filtering than the Radeon RX 590. (explain)

Radeon RX 6600 XT 251904 Mtexels/sec
Radeon RX 590 211536 Mtexels/sec
Difference: 40368 (19%)

Pixel Rate

The Radeon RX 6600 XT is quite a bit (approximately 168%) faster with regards to anti-aliasing than the Radeon RX 590, and should be capable of handling higher screen resolutions better. (explain)

Radeon RX 6600 XT 125952 Mpixels/sec
Radeon RX 590 47008 Mpixels/sec
Difference: 78944 (168%)

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 590

Amazon.com

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Radeon RX 6600 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.

Specifications

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Model Radeon RX 590 Radeon RX 6600 XT
Manufacturer AMD AMD
Year November 2018 August 2021
Code Name Polaris 30 Navi 23 XT
Memory 8192 MB 8192 MB
Core Speed 1469 MHz 1968 MHz
Memory Speed 8000 MHz 4000 GB/s
Power (Max TDP) 175 watts 160 watts
Bandwidth 262144 MB/sec 262144 MB/sec
Texel Rate 211536 Mtexels/sec 251904 Mtexels/sec
Pixel Rate 47008 Mpixels/sec 125952 Mpixels/sec
Unified Shaders 2304 2048
Texture Mapping Units 144 128
Render Output Units 32 64
Bus Type GDDR5 GDDR6
Bus Width 256-bit 128-bit
Fab Process 12 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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon RX 590

Amazon.com

Check prices at:

Radeon RX 6600 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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