GeForce RTX 2080 vs Radeon RX 5700 XT

Intro

Compare those specifications to the Radeon RX 5700 XT, which features core speeds of 1605 MHz on the GPU, and 1750 MHz on the 8096 MB of GDDR6 memory. It features 2560 SPUs along with 160 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080		215 Watts
Radeon RX 5700 XT		225 Watts
	Difference: 10 Watts (5%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should have identical performance. (explain)

Texel Rate

The GeForce RTX 2080 will be just a bit (approximately 9%) better at anisotropic filtering than the Radeon RX 5700 XT. (explain)

GeForce RTX 2080		278760 Mtexels/sec
Radeon RX 5700 XT		256800 Mtexels/sec
	Difference: 21960 (9%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 5700 XT is a better choice, though only just barely. (explain)

Radeon RX 5700 XT		102720 Mpixels/sec
GeForce RTX 2080		96960 Mpixels/sec
	Difference: 5760 (6%)

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 max amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can 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 clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.