GeForce RTX 2080 Ti vs GeForce RTX 4080

Intro

Compare those specifications to the GeForce RTX 4080, which comes with a clock frequency of 2205 MHz and a GDDR6X memory speed of 1400 MHz. It also makes use of a 256-bit bus, and makes use of a 4 nm design. It features 9728 SPUs, 304 Texture Address Units, and 112 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 Ti		250 Watts
GeForce RTX 4080		320 Watts
	Difference: 70 Watts (28%)

Memory Bandwidth

Theoretically, the GeForce RTX 4080 should perform just a bit faster than the GeForce RTX 2080 Ti overall. (explain)

GeForce RTX 4080		734003 MB/sec
GeForce RTX 2080 Ti		630784 MB/sec
	Difference: 103219 (16%)

Texel Rate

The GeForce RTX 4080 is much (more or less 83%) more effective at anisotropic filtering than the GeForce RTX 2080 Ti. (explain)

GeForce RTX 4080		670320 Mtexels/sec
GeForce RTX 2080 Ti		367200 Mtexels/sec
	Difference: 303120 (83%)

Pixel Rate

The GeForce RTX 4080 is a lot (about 108%) better at AA than the GeForce RTX 2080 Ti, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce RTX 4080		246960 Mpixels/sec
GeForce RTX 2080 Ti		118800 Mpixels/sec
	Difference: 128160 (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: Bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling 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 that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.