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Radeon R9 280X vs Radeon RX 590

Intro

The Radeon R9 280X comes with a core clock speed of 850 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 384-bit bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Compare all that to the Radeon RX 590, which features GPU clock speed of 1469 MHz, and 8192 MB of GDDR5 memory running at 2000 MHz through a 256-bit bus. It also features 2304 Stream Processors, 144 TAUs, and 32 ROPs.

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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

Theoretically, the Radeon R9 280X should perform a small bit faster than the Radeon RX 590 in general. (explain)

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

Texel Rate

The Radeon RX 590 should be a lot (approximately 94%) more effective at texture filtering than the Radeon R9 280X. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 590 is a better choice, and very much so. (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

Check prices at:

Radeon RX 590

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 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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 number of 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 speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon R9 280X

Amazon.com

Check prices at:

Radeon RX 590

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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