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 along with 144 Texture Address Units 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 is 49% faster than the Radeon R9 285 overall, because of its greater data rate. (explain)

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

Texel Rate

The Radeon RX 590 will be a lot (more or less 106%) better at anisotropic filtering than the Radeon R9 285. (explain)

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

Pixel Rate

The Radeon RX 590 will be quite a bit (approximately 60%) faster with regards to anti-aliasing than the Radeon R9 285, and also able to handle higher resolutions better. (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: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.