Radeon R9 285 vs Radeon RX 590

Intro

Compare those specifications to the Radeon RX 590, which has core clock speeds of 1469 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 RAM. It features 2304 SPUs as well as 144 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590		175 Watts
Radeon R9 285		190 Watts
	Difference: 15 Watts (9%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 590 will be 49% faster than the Radeon R9 285 in general, because of its higher data rate. (explain)

Radeon RX 590		262144 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 86144 (49%)

Texel Rate

The Radeon RX 590 should be a lot (approximately 106%) more effective at AF than the Radeon R9 285. (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 108720 (106%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 590 is the winner, by far. (explain)

Radeon RX 590		47008 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 17632 (60%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 processed in one second. This figure is calculated 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.