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Radeon R9 280 vs Radeon RX 6600

Intro

The Radeon R9 280 has a core clock frequency of 933 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 384-bit memory bus, and uses a 28 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon RX 6600, which makes use of a 7 nm design. AMD has clocked the core frequency at 1626 MHz. The GDDR6 RAM works at a speed of 1750 MHz on this specific card. It features 1792 SPUs along with 112 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 132 Watts
Radeon R9 280 250 Watts
Difference: 118 Watts (89%)

Memory Bandwidth

Performance-wise, the Radeon R9 280 should in theory be a bit superior to the Radeon RX 6600 in general. (explain)

Radeon R9 280 240000 MB/sec
Radeon RX 6600 229376 MB/sec
Difference: 10624 (5%)

Texel Rate

The Radeon RX 6600 will be quite a bit (more or less 74%) more effective at texture filtering than the Radeon R9 280. (explain)

Radeon RX 6600 182112 Mtexels/sec
Radeon R9 280 104496 Mtexels/sec
Difference: 77616 (74%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6600 is a better choice, by far. (explain)

Radeon RX 6600 104064 Mpixels/sec
Radeon R9 280 29856 Mpixels/sec
Difference: 74208 (249%)

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 R9 280

Amazon.com

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Radeon RX 6600

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 R9 280 Radeon RX 6600
Manufacturer AMD AMD
Year March 2014 October 2021
Code Name Tahiti Pro Navi 23
Memory 3072 MB 8192 MB
Core Speed 933 MHz 1626 MHz
Memory Speed 5000 MHz 3500 GB/s
Power (Max TDP) 250 watts 132 watts
Bandwidth 240000 MB/sec 229376 MB/sec
Texel Rate 104496 Mtexels/sec 182112 Mtexels/sec
Pixel Rate 29856 Mpixels/sec 104064 Mpixels/sec
Unified Shaders 1792 1792
Texture Mapping Units 112 112
Render Output Units 32 64
Bus Type GDDR5 GDDR6
Bus Width 384-bit 128-bit
Fab Process 28 nm 7 nm
Transistors 4313 million 11060 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 11.2 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.6

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R9 280

Amazon.com

Check prices at:

Radeon RX 6600

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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