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Radeon R9 280 vs Radeon RX 6650 XT

Intro

The Radeon R9 280 comes with core clock speeds of 933 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Compare all of that to the Radeon RX 6650 XT, which comes with a clock frequency of 2055 MHz and a GDDR6 memory frequency of 2190 MHz. It also uses a 128-bit memory bus, and uses a 7 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT 176 Watts
Radeon R9 280 250 Watts
Difference: 74 Watts (42%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT should be a small bit faster than the Radeon R9 280 in general. (explain)

Radeon RX 6650 XT 287072 MB/sec
Radeon R9 280 240000 MB/sec
Difference: 47072 (20%)

Texel Rate

The Radeon RX 6650 XT will be quite a bit (about 152%) more effective at anisotropic filtering than the Radeon R9 280. (explain)

Radeon RX 6650 XT 263040 Mtexels/sec
Radeon R9 280 104496 Mtexels/sec
Difference: 158544 (152%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6650 XT is superior to the Radeon R9 280, by far. (explain)

Radeon RX 6650 XT 131520 Mpixels/sec
Radeon R9 280 29856 Mpixels/sec
Difference: 101664 (341%)

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

Check prices at:

Radeon RX 6650 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 6650 XT
Manufacturer AMD AMD
Year March 2014 May 2022
Code Name Tahiti Pro Navi 23
Memory 3072 MB 8192 MB
Core Speed 933 MHz 2055 MHz
Memory Speed 5000 MHz 4380 GB/s
Power (Max TDP) 250 watts 176 watts
Bandwidth 240000 MB/sec 287072 MB/sec
Texel Rate 104496 Mtexels/sec 263040 Mtexels/sec
Pixel Rate 29856 Mpixels/sec 131520 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 information (measured in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 are processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends 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

Hide Prices

Radeon R9 280

Amazon.com

Check prices at:

Radeon RX 6650 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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