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Radeon R9 280 vs Radeon RX 6600 XT

Intro

The Radeon R9 280 uses a 28 nm design. AMD has clocked the core speed at 933 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this particular card. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Compare those specifications to the Radeon RX 6600 XT, which uses a 7 nm design. AMD has clocked the core speed at 1968 MHz. The GDDR6 RAM is set to run at a speed of 2000 MHz on this specific card. It features 2048 SPUs along with 128 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 XT 160 Watts
Radeon R9 280 250 Watts
Difference: 90 Watts (56%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6600 XT is 9% faster than the Radeon R9 280 overall, due to its higher data rate. (explain)

Radeon RX 6600 XT 262144 MB/sec
Radeon R9 280 240000 MB/sec
Difference: 22144 (9%)

Texel Rate

The Radeon RX 6600 XT is quite a bit (approximately 141%) better at texture filtering than the Radeon R9 280. (explain)

Radeon RX 6600 XT 251904 Mtexels/sec
Radeon R9 280 104496 Mtexels/sec
Difference: 147408 (141%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6600 XT is superior to the Radeon R9 280, by a large margin. (explain)

Radeon RX 6600 XT 125952 Mpixels/sec
Radeon R9 280 29856 Mpixels/sec
Difference: 96096 (322%)

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 XT

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 XT
Manufacturer AMD AMD
Year March 2014 August 2021
Code Name Tahiti Pro Navi 23 XT
Memory 3072 MB 8192 MB
Core Speed 933 MHz 1968 MHz
Memory Speed 5000 MHz 4000 GB/s
Power (Max TDP) 250 watts 160 watts
Bandwidth 240000 MB/sec 262144 MB/sec
Texel Rate 104496 Mtexels/sec 251904 Mtexels/sec
Pixel Rate 29856 Mpixels/sec 125952 Mpixels/sec
Unified Shaders 1792 2048
Texture Mapping Units 112 128
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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, 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 by the core clock speed of the chip. The better the texel rate, the better the graphics 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 number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon R9 280

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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