GeForce RTX 2080 SUPER vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which comes with GPU clock speed of 1257 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also is comprised of 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

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

In theory, the GeForce RTX 2080 SUPER should be 94% quicker than the Radeon RX 580 overall, due to its higher bandwidth. (explain)

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

Texel Rate

The GeForce RTX 2080 SUPER is quite a bit (more or less 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 should be a lot (approximately 163%) faster with regards to full screen anti-aliasing than the Radeon RX 580, and able to handle 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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out 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 a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core 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 also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.