GeForce RTX 2080 Ti vs Radeon RX 7900 XT

Intro

Compare all that to the Radeon RX 7900 XT, which features GPU clock speed of 1500 MHz, and 20480 MB of GDDR6 memory set to run at 2500 MHz through a 320-bit bus. It also is comprised of 5376 Stream Processors, 336 Texture Address Units, and 192 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 Ti		250 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 50 Watts (20%)

Memory Bandwidth

The Radeon RX 7900 XT, in theory, should be quite a bit faster than the GeForce RTX 2080 Ti in general. (explain)

Radeon RX 7900 XT		819200 MB/sec
GeForce RTX 2080 Ti		630784 MB/sec
	Difference: 188416 (30%)

Texel Rate

The Radeon RX 7900 XT is much (approximately 37%) faster with regards to AF than the GeForce RTX 2080 Ti. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
GeForce RTX 2080 Ti		367200 Mtexels/sec
	Difference: 136800 (37%)

Pixel Rate

The Radeon RX 7900 XT is a lot (approximately 142%) more effective at AA than the GeForce RTX 2080 Ti, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
GeForce RTX 2080 Ti		118800 Mpixels/sec
	Difference: 169200 (142%)

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 information (in units of megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated 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 also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.