GeForce RTX 3080 Ti vs Geforce GTX 1080 Ti

Intro

Compare those specifications to the Geforce GTX 1080 Ti, which uses a 16 nm design. nVidia has clocked the core frequency at 1480 MHz. The GDDR5X memory runs at a speed of 1376 MHz on this specific model. It features 3584 SPUs along with 224 TAUs and 88 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce RTX 3080 Ti is 89% quicker than the Geforce GTX 1080 Ti overall, because of its greater data rate. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
Geforce GTX 1080 Ti		495616 MB/sec
	Difference: 438681 (89%)

Texel Rate

The GeForce RTX 3080 Ti will be much (about 32%) more effective at AF than the Geforce GTX 1080 Ti. (explain)

GeForce RTX 3080 Ti		436800 Mtexels/sec
Geforce GTX 1080 Ti		331520 Mtexels/sec
	Difference: 105280 (32%)

Pixel Rate

If using a high resolution is important to you, then the GeForce RTX 3080 Ti is the winner, but it probably won't make a huge difference. (explain)

GeForce RTX 3080 Ti		152880 Mpixels/sec
Geforce GTX 1080 Ti		130240 Mpixels/sec
	Difference: 22640 (17%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the 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 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 output 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 reach the maximum fill rate.