GeForce RTX 3080 12 GB vs Geforce GTX 1080 Ti

Intro

Compare those specs to the Geforce GTX 1080 Ti, which features clock speeds of 1480 MHz on the GPU, and 1376 MHz on the 11264 MB of GDDR5X memory. It features 3584 SPUs as well as 224 TAUs and 88 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 1080 Ti		250 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 100 Watts (40%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB is 89% faster than the Geforce GTX 1080 Ti in general, due to its higher data rate. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Geforce GTX 1080 Ti		495616 MB/sec
	Difference: 438682 (89%)

Texel Rate

The GeForce RTX 3080 12 GB should be a little bit (about 6%) better at AF than the Geforce GTX 1080 Ti. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Geforce GTX 1080 Ti		331520 Mtexels/sec
	Difference: 21280 (6%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce RTX 3080 12 GB is superior to the Geforce GTX 1080 Ti, though not by far. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Geforce GTX 1080 Ti		130240 Mpixels/sec
	Difference: 10880 (8%)

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 data (in units of megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.