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Radeon R9 280 vs Radeon RX 6600

Intro

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

Compare those specs to the Radeon RX 6600, which has a GPU core clock speed of 1626 MHz, and 8192 MB of GDDR6 RAM set to run at 1750 MHz through a 128-bit bus. It also is made up of 1792 Stream Processors, 112 Texture Address Units, and 64 ROPs.

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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

The Radeon R9 280, in theory, should perform a little bit faster than the Radeon RX 6600 overall. (explain)

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

Texel Rate

The Radeon RX 6600 should be much (more or less 74%) better 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

The Radeon RX 6600 should be a lot (about 249%) more effective at FSAA than the Radeon R9 280, and also capable of handling higher resolutions while still performing well. (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 data (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum 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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