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Radeon RX 6600 XT vs Radeon RX 6650 XT

Intro

The Radeon RX 6600 XT comes with a GPU core speed of 1968 MHz, and the 8192 MB of GDDR6 memory is set to run at 2000 MHz through a 128-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

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

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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

Theoretically speaking, the Radeon RX 6650 XT will be 10% faster than the Radeon RX 6600 XT in general, due to its higher bandwidth. (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 will be a bit (about 4%) better at 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, though only just barely. (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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max 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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