GeForce RTX 3080 Ti vs Radeon RX 7900 XT

Intro

Compare those specifications to the Radeon RX 7900 XT, which comes with a core clock speed of 1500 MHz and a GDDR6 memory speed of 2500 MHz. It also uses a 320-bit memory bus, and makes use of a 5 nm design. It is comprised of 5376 SPUs, 336 Texture Address Units, 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

The GeForce RTX 3080 Ti should theoretically be a little bit faster than the Radeon RX 7900 XT in general. (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 should be a bit (about 15%) faster with regards to texture 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

The Radeon RX 7900 XT should be much (about 88%) more effective at full screen anti-aliasing than the GeForce RTX 3080 Ti, and also able to handle higher resolutions while still performing well. (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 (counted in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, 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 clock speed of the chip. The higher this number, the better the graphics card will be at handling 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 could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.