GeForce RTX 3080 Ti vs Radeon RX 6800 XT

Intro

Compare those specifications to the Radeon RX 6800 XT, which comes with GPU core speed of 1825 MHz, and 16384 MB of GDDR6 memory running at 2000 MHz through a 256-bit bus. It also is comprised of 4608 Stream Processors, 288 TAUs, and 128 Raster Operation Units.

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

As far as performance goes, the GeForce RTX 3080 Ti should theoretically be quite a bit better 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 should be a little bit (approximately 20%) better 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 is a lot (approximately 53%) faster with regards to AA than the GeForce RTX 3080 Ti, and capable of handling higher screen 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: Memory bandwidth is the max amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.