GeForce RTX 2080 Ti vs GeForce RTX 3090

Intro

Compare those specifications to the GeForce RTX 3090, which comes with a clock speed of 1395 MHz and a GDDR6X memory speed of 1219 MHz. It also uses a 384-bit memory bus, and makes use of a 8 nm design. It is made up of 10496 SPUs, 328 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 3090		350 Watts
	Difference: 100 Watts (40%)

Memory Bandwidth

In theory, the GeForce RTX 3090 should be a lot faster than the GeForce RTX 2080 Ti overall. (explain)

GeForce RTX 3090		958668 MB/sec
GeForce RTX 2080 Ti		630784 MB/sec
	Difference: 327884 (52%)

Texel Rate

The GeForce RTX 3090 will be quite a bit (about 25%) faster with regards to anisotropic filtering than the GeForce RTX 2080 Ti. (explain)

GeForce RTX 3090		457560 Mtexels/sec
GeForce RTX 2080 Ti		367200 Mtexels/sec
	Difference: 90360 (25%)

Pixel Rate

The GeForce RTX 3090 is much (approximately 32%) more effective at full screen anti-aliasing than the GeForce RTX 2080 Ti, and able to handle higher resolutions without slowing down too much. (explain)

GeForce RTX 3090		156240 Mpixels/sec
GeForce RTX 2080 Ti		118800 Mpixels/sec
	Difference: 37440 (32%)

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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units by the core 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 processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.