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Radeon RX 480 vs Radeon RX 6600 XT

Intro

The Radeon RX 480 comes with a GPU core speed of 1120 MHz, and the 8192 MB of GDDR5 memory runs at 2000 MHz through a 256-bit bus. It also features 2304 Stream Processors, 144 Texture Address Units, and 32 ROPs.

Compare all that to the Radeon RX 6600 XT, which has core speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 memory. It features 2048 SPUs as well as 128 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 150 Watts
Radeon RX 6600 XT 160 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

Both cards have exactly the same bandwidth, so theoretically they should have identical performance. (explain)

Texel Rate

The Radeon RX 6600 XT should be much (approximately 56%) better at anisotropic filtering than the Radeon RX 480. (explain)

Radeon RX 6600 XT 251904 Mtexels/sec
Radeon RX 480 161280 Mtexels/sec
Difference: 90624 (56%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 6600 XT is the winner, by far. (explain)

Radeon RX 6600 XT 125952 Mpixels/sec
Radeon RX 480 35840 Mpixels/sec
Difference: 90112 (251%)

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 480

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.

Specifications

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Model Radeon RX 480 Radeon RX 6600 XT
Manufacturer AMD AMD
Year June 2016 August 2021
Code Name Polaris 10 Navi 23 XT
Memory 8192 MB 8192 MB
Core Speed 1120 MHz 1968 MHz
Memory Speed 8000 MHz 4000 GB/s
Power (Max TDP) 150 watts 160 watts
Bandwidth 262144 MB/sec 262144 MB/sec
Texel Rate 161280 Mtexels/sec 251904 Mtexels/sec
Pixel Rate 35840 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 14 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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better 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 chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon RX 480

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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