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Radeon R9 280 vs Radeon RX 6600 XT

Intro

The Radeon R9 280 makes use of a 28 nm design. AMD has clocked the core speed at 933 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this particular model. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Compare all that to the Radeon RX 6600 XT, which features a clock speed of 1968 MHz and a GDDR6 memory speed of 2000 MHz. It also makes use of a 128-bit bus, and uses a 7 nm design. It is made up of 2048 SPUs, 128 TAUs, and 64 ROPs.

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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 should be 9% quicker than the Radeon R9 280 in general, because of its greater 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 should be quite a bit (approximately 141%) faster with regards to 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

The Radeon RX 6600 XT will be much (more or less 322%) better at full screen anti-aliasing than the Radeon R9 280, and should be capable of handling higher screen resolutions more effectively. (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

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 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 max amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach 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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