GeForce RTX 3080 12 GB vs Radeon RX 6600 XT

Intro

Compare those specs to the Radeon RX 6600 XT, which has clock speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 memory. It features 2048 SPUs along with 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 190 Watts (119%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB should be 256% faster than the Radeon RX 6600 XT in general, because of its greater bandwidth. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 672154 (256%)

Texel Rate

The GeForce RTX 3080 12 GB is quite a bit (approximately 40%) better at texture filtering than the Radeon RX 6600 XT. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon RX 6600 XT		251904 Mtexels/sec
	Difference: 100896 (40%)

Pixel Rate

The GeForce RTX 3080 12 GB should be a small bit (about 12%) better at AA than the Radeon RX 6600 XT, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon RX 6600 XT		125952 Mpixels/sec
	Difference: 15168 (12%)

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 transported across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core 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 in one second.

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