GeForce RTX 3080 Ti vs Radeon RX 7900 XT

Intro

Compare those specs to the Radeon RX 7900 XT, which has GPU core 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 SPUs, 336 TAUs, and 192 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 7900 XT		300 Watts
GeForce RTX 3080 Ti		350 Watts
	Difference: 50 Watts (17%)

Memory Bandwidth

In theory, the GeForce RTX 3080 Ti should perform a little bit faster than the Radeon RX 7900 XT overall. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
Radeon RX 7900 XT		819200 MB/sec
	Difference: 115097 (14%)

Texel Rate

The Radeon RX 7900 XT will be a small bit (about 15%) better at anisotropic filtering than the GeForce RTX 3080 Ti. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
GeForce RTX 3080 Ti		436800 Mtexels/sec
	Difference: 67200 (15%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 7900 XT is superior to the GeForce RTX 3080 Ti, by a large margin. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
GeForce RTX 3080 Ti		152880 Mpixels/sec
	Difference: 135120 (88%)

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 maximum amount of information (measured in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the interface 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 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 amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.