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Radeon RX 6600 XT vs Radeon VII

Intro

The Radeon RX 6600 XT features a GPU clock speed of 1968 MHz, and the 8192 MB of GDDR6 memory runs at 2000 MHz through a 128-bit bus. It also is made up of 2048 Stream Processors, 128 TAUs, and 64 Raster Operation Units.

Compare all that to the Radeon VII, which makes use of a 7 nm design. AMD has set the core frequency at 1400 MHz. The HBM2 memory works at a frequency of 1000 MHz on this specific model. It features 3840 SPUs along with 240 TAUs 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 VII 295 Watts
Difference: 135 Watts (84%)

Memory Bandwidth

Theoretically, the Radeon VII should perform a lot faster than the Radeon RX 6600 XT overall. (explain)

Radeon VII 1048576 MB/sec
Radeon RX 6600 XT 262144 MB/sec
Difference: 786432 (300%)

Texel Rate

The Radeon VII should be quite a bit (about 33%) better at AF than the Radeon RX 6600 XT. (explain)

Radeon VII 336000 Mtexels/sec
Radeon RX 6600 XT 251904 Mtexels/sec
Difference: 84096 (33%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6600 XT is a better choice, by a large margin. (explain)

Radeon RX 6600 XT 125952 Mpixels/sec
Radeon VII 89600 Mpixels/sec
Difference: 36352 (41%)

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 VII

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 VII
Manufacturer AMD AMD
Year August 2021 2019
Code Name Navi 23 XT Vega 20 XT
Memory 8192 MB 16384 MB
Core Speed 1968 MHz 1400 MHz
Memory Speed 2000 GB/s 1000 MHz
Power (Max TDP) 160 watts 295 watts
Bandwidth 262144 MB/sec 1048576 MB/sec
Texel Rate 251904 Mtexels/sec 336000 Mtexels/sec
Pixel Rate 125952 Mpixels/sec 89600 Mpixels/sec
Unified Shaders 2048 3840
Texture Mapping Units 128 240
Render Output Units 64 64
Bus Type GDDR6 HBM2
Bus Width 128-bit 4096-bit
Fab Process 7 nm 7 nm
Transistors 11060 million 13230 million
Bus PCIe 4.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.6 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at 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 write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon RX 6600 XT

Amazon.com

Check prices at:

Radeon VII

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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