GeForce RTX 2080 Ti vs GeForce RTX 4090

Intro

Compare those specs to the GeForce RTX 4090, which makes use of a 4 nm design. nVidia has clocked the core speed at 2235 MHz. The GDDR6X memory is set to run at a speed of 1325 MHz on this particular card. It features 16384 SPUs as well as 512 TAUs and 176 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 Ti		250 Watts
GeForce RTX 4090		450 Watts
	Difference: 200 Watts (80%)

Memory Bandwidth

In theory, the GeForce RTX 4090 is 65% faster than the GeForce RTX 2080 Ti in general, due to its higher bandwidth. (explain)

GeForce RTX 4090		1042432 MB/sec
GeForce RTX 2080 Ti		630784 MB/sec
	Difference: 411648 (65%)

Texel Rate

The GeForce RTX 4090 is quite a bit (approximately 212%) more effective at AF than the GeForce RTX 2080 Ti. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
GeForce RTX 2080 Ti		367200 Mtexels/sec
	Difference: 777120 (212%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce RTX 4090 is a better choice, and very much so. (explain)

GeForce RTX 4090		393360 Mpixels/sec
GeForce RTX 2080 Ti		118800 Mpixels/sec
	Difference: 274560 (231%)

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 maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.