GeForce RTX 2080 vs GeForce RTX 3090

Intro

Compare those specifications to the GeForce RTX 3090, which uses a 8 nm design. nVidia has clocked the core speed at 1395 MHz. The GDDR6X RAM runs at a speed of 1219 MHz on this card. It features 10496 SPUs as well as 328 Texture Address Units and 112 ROPs.

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 in theory perform quite a bit faster than the GeForce RTX 2080 in general. (explain)

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

Texel Rate

The GeForce RTX 3090 should be a lot (more or less 64%) more effective at anisotropic filtering than the GeForce RTX 2080. (explain)

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

Pixel Rate

The GeForce RTX 3090 should be quite a bit (approximately 61%) better at FSAA than the GeForce RTX 2080, and should be capable of handling higher screen resolutions without slowing down too much. (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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 ability to reach the max fill rate.