GeForce RTX 3080 vs Radeon RX 7900 XT

Intro

Compare that to the Radeon RX 7900 XT, which has core speeds of 1500 MHz on the GPU, and 2500 MHz on the 20480 MB of GDDR6 memory. It features 5376 SPUs as well as 336 TAUs and 192 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 7900 XT		300 Watts
GeForce RTX 3080		320 Watts
	Difference: 20 Watts (7%)

Memory Bandwidth

In theory, the Radeon RX 7900 XT should be a bit faster than the GeForce RTX 3080 in general. (explain)

Radeon RX 7900 XT		819200 MB/sec
GeForce RTX 3080		778547 MB/sec
	Difference: 40653 (5%)

Texel Rate

The Radeon RX 7900 XT will be much (about 29%) faster with regards to texture filtering than the GeForce RTX 3080. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
GeForce RTX 3080		391680 Mtexels/sec
	Difference: 112320 (29%)

Pixel Rate

The Radeon RX 7900 XT will be a lot (approximately 108%) more effective at AA than the GeForce RTX 3080, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
GeForce RTX 3080		138240 Mpixels/sec
	Difference: 149760 (108%)

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 information (counted in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.