GeForce GTX 580 3GB vs Radeon RX 590

Intro

Compare those specs to the Radeon RX 590, which features a GPU core clock speed of 1469 MHz, and 8192 MB of GDDR5 memory set to run at 2000 MHz through a 256-bit bus. It also features 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590		175 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 69 Watts (39%)

Memory Bandwidth

In theory, the Radeon RX 590 should be 36% faster than the GeForce GTX 580 3GB overall, due to its greater data rate. (explain)

Radeon RX 590		262144 MB/sec
GeForce GTX 580 3GB		192384 MB/sec
	Difference: 69760 (36%)

Texel Rate

The Radeon RX 590 will be much (more or less 328%) faster with regards to texture filtering than the GeForce GTX 580 3GB. (explain)

Radeon RX 590		211536 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 162128 (328%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 590 is the winner, and very much so. (explain)

Radeon RX 590		47008 Mpixels/sec
GeForce GTX 580 3GB		37056 Mpixels/sec
	Difference: 9952 (27%)

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 megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.