GeForce RTX 2080 SUPER vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which features a core clock frequency of 1257 MHz and a GDDR5 memory speed of 2000 MHz. It also makes use of a 256-bit bus, and makes use of a 14 nm design. It is comprised of 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
GeForce RTX 2080 SUPER		250 Watts
	Difference: 65 Watts (35%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 2080 SUPER should in theory be quite a bit better than the Radeon RX 580 in general. (explain)

GeForce RTX 2080 SUPER		507904 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 245760 (94%)

Texel Rate

The GeForce RTX 2080 SUPER should be much (approximately 75%) more effective at texture filtering than the Radeon RX 580. (explain)

GeForce RTX 2080 SUPER		316800 Mtexels/sec
Radeon RX 580		181008 Mtexels/sec
	Difference: 135792 (75%)

Pixel Rate

The GeForce RTX 2080 SUPER will be much (about 163%) more effective at anti-aliasing than the Radeon RX 580, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce RTX 2080 SUPER		105600 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 65376 (163%)

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 maximum amount of data (measured in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.