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Radeon RX 590 vs Radeon RX 6650 XT

Intro

The Radeon RX 590 features a GPU core speed of 1469 MHz, and the 8192 MB of GDDR5 RAM runs at 2000 MHz through a 256-bit bus. It also features 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has set the core frequency at 2055 MHz. The GDDR6 memory runs at a frequency of 2190 MHz on this particular model. It features 2048 SPUs as well as 128 Texture Address Units and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590 175 Watts
Radeon RX 6650 XT 176 Watts
Difference: 1 Watts (1%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT will be 10% faster than the Radeon RX 590 overall, because of its greater bandwidth. (explain)

Radeon RX 6650 XT 287072 MB/sec
Radeon RX 590 262144 MB/sec
Difference: 24928 (10%)

Texel Rate

The Radeon RX 6650 XT is a lot (more or less 24%) more effective at anisotropic filtering than the Radeon RX 590. (explain)

Radeon RX 6650 XT 263040 Mtexels/sec
Radeon RX 590 211536 Mtexels/sec
Difference: 51504 (24%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6650 XT is the winner, by far. (explain)

Radeon RX 6650 XT 131520 Mpixels/sec
Radeon RX 590 47008 Mpixels/sec
Difference: 84512 (180%)

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 6650 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 6650 XT
Manufacturer AMD AMD
Year November 2018 May 2022
Code Name Polaris 30 Navi 23
Memory 8192 MB 8192 MB
Core Speed 1469 MHz 2055 MHz
Memory Speed 8000 MHz 4380 GB/s
Power (Max TDP) 175 watts 176 watts
Bandwidth 262144 MB/sec 287072 MB/sec
Texel Rate 211536 Mtexels/sec 263040 Mtexels/sec
Pixel Rate 47008 Mpixels/sec 131520 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 transported over the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 can be applied in one 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 maximum fill rate.

Display Prices

Hide Prices

Radeon RX 590

Amazon.com

Check prices at:

Radeon RX 6650 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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