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Radeon RX 590 vs Radeon RX 6600 XT

Intro

The Radeon RX 590 features a clock frequency of 1469 MHz and a GDDR5 memory frequency of 2000 MHz. It also makes use of a 256-bit memory bus, and uses a 12 nm design. It is made up of 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Compare that to the Radeon RX 6600 XT, which makes use of a 7 nm design. AMD has set the core frequency at 1968 MHz. The GDDR6 memory works at a speed of 2000 MHz on this particular card. It features 2048 SPUs as well as 128 Texture Address Units and 64 Rasterization Operator Units.

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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 theoretically they should have identical performance. (explain)

Texel Rate

The Radeon RX 6600 XT will be a little bit (approximately 19%) faster with regards to AF 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 should be much (more or less 168%) more effective at FSAA 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

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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 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 max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 memory bandwidth is, the lower the ability 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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