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Radeon RX 6600 XT vs Radeon RX 6650 XT

Intro

The Radeon RX 6600 XT makes use of a 7 nm design. AMD has set the core frequency at 1968 MHz. The GDDR6 RAM works at a frequency of 2000 MHz on this specific model. It features 2048 SPUs as well as 128 Texture Address Units and 64 ROPs.

Compare that to the Radeon RX 6650 XT, which has a core clock speed of 2055 MHz and a GDDR6 memory frequency of 2190 MHz. It also uses a 128-bit bus, and makes use of a 7 nm design. It is made up of 2048 SPUs, 128 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT 160 Watts
Radeon RX 6650 XT 176 Watts
Difference: 16 Watts (10%)

Memory Bandwidth

The Radeon RX 6650 XT should theoretically be a little bit faster than the Radeon RX 6600 XT overall. (explain)

Radeon RX 6650 XT 287072 MB/sec
Radeon RX 6600 XT 262144 MB/sec
Difference: 24928 (10%)

Texel Rate

The Radeon RX 6650 XT should be a bit (approximately 4%) faster with regards to texture filtering than the Radeon RX 6600 XT. (explain)

Radeon RX 6650 XT 263040 Mtexels/sec
Radeon RX 6600 XT 251904 Mtexels/sec
Difference: 11136 (4%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6650 XT is the winner, but only just. (explain)

Radeon RX 6650 XT 131520 Mpixels/sec
Radeon RX 6600 XT 125952 Mpixels/sec
Difference: 5568 (4%)

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 6600 XT

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 6600 XT Radeon RX 6650 XT
Manufacturer AMD AMD
Year August 2021 May 2022
Code Name Navi 23 XT Navi 23
Memory 8192 MB 8192 MB
Core Speed 1968 MHz 2055 MHz
Memory Speed 2000 GB/s 2190 GB/s
Power (Max TDP) 160 watts 176 watts
Bandwidth 262144 MB/sec 287072 MB/sec
Texel Rate 251904 Mtexels/sec 263040 Mtexels/sec
Pixel Rate 125952 Mpixels/sec 131520 Mpixels/sec
Unified Shaders 2048 2048
Texture Mapping Units 128 128
Render Output Units 64 64
Bus Type GDDR6 GDDR6
Bus Width 128-bit 128-bit
Fab Process 7 nm 7 nm
Transistors 11060 million 11060 million
Bus PCIe 4.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.6 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon RX 6600 XT

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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