GeForce RTX 3080 Ti vs Radeon RX 6800 XT

Intro

Compare that to the Radeon RX 6800 XT, which comes with core clock speeds of 1825 MHz on the GPU, and 2000 MHz on the 16384 MB of GDDR6 RAM. It features 4608 SPUs as well as 288 Texture Address Units and 128 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6800 XT		300 Watts
GeForce RTX 3080 Ti		350 Watts
	Difference: 50 Watts (17%)

Memory Bandwidth

Theoretically, the GeForce RTX 3080 Ti should perform quite a bit faster than the Radeon RX 6800 XT overall. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
Radeon RX 6800 XT		524288 MB/sec
	Difference: 410009 (78%)

Texel Rate

The Radeon RX 6800 XT is a little bit (more or less 20%) more effective at AF than the GeForce RTX 3080 Ti. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
GeForce RTX 3080 Ti		436800 Mtexels/sec
	Difference: 88800 (20%)

Pixel Rate

The Radeon RX 6800 XT should be a lot (more or less 53%) faster with regards to anti-aliasing than the GeForce RTX 3080 Ti, and also capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
GeForce RTX 3080 Ti		152880 Mpixels/sec
	Difference: 80720 (53%)

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 information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.