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Radeon R9 280X vs Radeon RX 590

Intro

The Radeon R9 280X has core speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Compare those specs to the Radeon RX 590, which comes with a core clock frequency of 1469 MHz and a GDDR5 memory frequency of 2000 MHz. It also uses a 256-bit bus, and uses a 12 nm design. It is comprised of 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590 175 Watts
Radeon R9 280X 250 Watts
Difference: 75 Watts (43%)

Memory Bandwidth

As far as performance goes, the Radeon R9 280X should theoretically be a bit superior to the Radeon RX 590 overall. (explain)

Radeon R9 280X 288000 MB/sec
Radeon RX 590 262144 MB/sec
Difference: 25856 (10%)

Texel Rate

The Radeon RX 590 will be much (approximately 94%) more effective at AF than the Radeon R9 280X. (explain)

Radeon RX 590 211536 Mtexels/sec
Radeon R9 280X 108800 Mtexels/sec
Difference: 102736 (94%)

Pixel Rate

The Radeon RX 590 will be quite a bit (approximately 73%) better at FSAA than the Radeon R9 280X, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 590 47008 Mpixels/sec
Radeon R9 280X 27200 Mpixels/sec
Difference: 19808 (73%)

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 280X

Amazon.com

Radeon RX 590

Amazon.com

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 280X Radeon RX 590
Manufacturer AMD AMD
Year October 2013 November 2018
Code Name Tahiti XTL Polaris 30
Memory 3072 MB 8192 MB
Core Speed 850 MHz 1469 MHz
Memory Speed 6000 MHz 8000 MHz
Power (Max TDP) 250 watts 175 watts
Bandwidth 288000 MB/sec 262144 MB/sec
Texel Rate 108800 Mtexels/sec 211536 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 47008 Mpixels/sec
Unified Shaders 2048 2304
Texture Mapping Units 128 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 12 nm
Transistors 4313 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon R9 280X

Amazon.com

Radeon RX 590

Amazon.com

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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