GeForce RTX 2080 vs GeForce RTX 3090

Intro

Compare those specifications to the GeForce RTX 3090, which comes with a GPU core clock speed of 1395 MHz, and 24576 MB of GDDR6X RAM running at 1219 MHz through a 384-bit bus. It also is made up of 10496 Stream Processors, 328 TAUs, and 112 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080		215 Watts
GeForce RTX 3090		350 Watts
	Difference: 135 Watts (63%)

Memory Bandwidth

The GeForce RTX 3090 should theoretically be quite a bit faster than the GeForce RTX 2080 overall. (explain)

GeForce RTX 3090		958668 MB/sec
GeForce RTX 2080		458752 MB/sec
	Difference: 499916 (109%)

Texel Rate

The GeForce RTX 3090 is quite a bit (about 64%) faster with regards to texture filtering than the GeForce RTX 2080. (explain)

GeForce RTX 3090		457560 Mtexels/sec
GeForce RTX 2080		278760 Mtexels/sec
	Difference: 178800 (64%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce RTX 3090 is the winner, by a large margin. (explain)

GeForce RTX 3090		156240 Mpixels/sec
GeForce RTX 2080		96960 Mpixels/sec
	Difference: 59280 (61%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per 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 - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.