GeForce RTX 2080 SUPER vs GeForce RTX 4090

Intro

Compare those specifications to the GeForce RTX 4090, which features a GPU core clock speed of 2235 MHz, and 24576 MB of GDDR6X RAM set to run at 1325 MHz through a 384-bit bus. It also is made up of 16384 SPUs, 512 TAUs, and 176 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce RTX 4090 should be 105% faster than the GeForce RTX 2080 SUPER in general, due to its greater bandwidth. (explain)

GeForce RTX 4090		1042432 MB/sec
GeForce RTX 2080 SUPER		507904 MB/sec
	Difference: 534528 (105%)

Texel Rate

The GeForce RTX 4090 is much (approximately 261%) more effective at texture filtering than the GeForce RTX 2080 SUPER. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
GeForce RTX 2080 SUPER		316800 Mtexels/sec
	Difference: 827520 (261%)

Pixel Rate

The GeForce RTX 4090 will be a lot (approximately 273%) faster with regards to AA than the GeForce RTX 2080 SUPER, and also capable of handling higher screen resolutions better. (explain)

GeForce RTX 4090		393360 Mpixels/sec
GeForce RTX 2080 SUPER		105600 Mpixels/sec
	Difference: 287760 (273%)

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 transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better 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 most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.