Geforce GTX 680 vs Radeon RX 590

Intro

Compare those specifications to the Radeon RX 590, which comes with a GPU core clock speed of 1469 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also is made up of 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 680		195 Watts
	Difference: 20 Watts (11%)

Memory Bandwidth

In theory, the Radeon RX 590 will be 36% quicker than the Geforce GTX 680 in general, because of its higher data rate. (explain)

Radeon RX 590		262144 MB/sec
Geforce GTX 680		192256 MB/sec
	Difference: 69888 (36%)

Texel Rate

The Radeon RX 590 is much (more or less 64%) faster with regards to AF than the Geforce GTX 680. (explain)

Radeon RX 590		211536 Mtexels/sec
Geforce GTX 680		128768 Mtexels/sec
	Difference: 82768 (64%)

Pixel Rate

If running with a high resolution 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 680		32192 Mpixels/sec
	Difference: 14816 (46%)

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 information (counted in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.