GeForce RTX 3080 Ti vs Radeon RX 7900 XT

Intro

Compare that to the Radeon RX 7900 XT, which features a clock frequency of 1500 MHz and a GDDR6 memory frequency of 2500 MHz. It also makes use of a 320-bit bus, and makes use of a 5 nm design. It features 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

Theoretically, 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 is a bit (about 15%) faster with regards to 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

The Radeon RX 7900 XT should be a lot (approximately 88%) better at anti-aliasing than the GeForce RTX 3080 Ti, and should be able to handle higher screen 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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.