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Radeon RX 480 4GB vs Radeon RX 6600 XT

Intro

The Radeon RX 480 4GB uses a 14 nm design. AMD has set the core frequency at 1120 MHz. The GDDR5 RAM works at a frequency of 1750 MHz on this model. It features 2304 SPUs along with 144 Texture Address Units and 32 ROPs.

Compare all that to the Radeon RX 6600 XT, which comes with GPU core speed of 1968 MHz, and 8192 MB of GDDR6 RAM running at 2000 MHz through a 128-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 4GB 150 Watts
Radeon RX 6600 XT 160 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

Performance-wise, the Radeon RX 6600 XT should theoretically be a little bit better than the Radeon RX 480 4GB in general. (explain)

Radeon RX 6600 XT 262144 MB/sec
Radeon RX 480 4GB 229376 MB/sec
Difference: 32768 (14%)

Texel Rate

The Radeon RX 6600 XT will be much (approximately 56%) faster with regards to texture filtering than the Radeon RX 480 4GB. (explain)

Radeon RX 6600 XT 251904 Mtexels/sec
Radeon RX 480 4GB 161280 Mtexels/sec
Difference: 90624 (56%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6600 XT is superior to the Radeon RX 480 4GB, by far. (explain)

Radeon RX 6600 XT 125952 Mpixels/sec
Radeon RX 480 4GB 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 4GB

Amazon.com

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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 4GB Radeon RX 6600 XT
Manufacturer AMD AMD
Year June 2016 August 2021
Code Name Polaris 10 Navi 23 XT
Memory 4096 MB 8192 MB
Core Speed 1120 MHz 1968 MHz
Memory Speed 7000 MHz 4000 GB/s
Power (Max TDP) 150 watts 160 watts
Bandwidth 229376 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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 get to the maximum fill rate.

Display Prices

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Radeon RX 480 4GB

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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