GeForce RTX 3080 Ti vs GeForce RTX 4090

Intro

Compare all of that to the GeForce RTX 4090, which comes with a core clock speed of 2235 MHz and a GDDR6X memory frequency of 1325 MHz. It also features a 384-bit memory bus, and uses a 4 nm design. It features 16384 SPUs, 512 Texture Address Units, and 176 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080 Ti		350 Watts
GeForce RTX 4090		450 Watts
	Difference: 100 Watts (29%)

Memory Bandwidth

Theoretically, the GeForce RTX 4090 should perform a little bit faster than the GeForce RTX 3080 Ti overall. (explain)

GeForce RTX 4090		1042432 MB/sec
GeForce RTX 3080 Ti		934297 MB/sec
	Difference: 108135 (12%)

Texel Rate

The GeForce RTX 4090 will be much (more or less 162%) faster with regards to texture filtering than the GeForce RTX 3080 Ti. (explain)

GeForce RTX 4090		1144320 Mtexels/sec
GeForce RTX 3080 Ti		436800 Mtexels/sec
	Difference: 707520 (162%)

Pixel Rate

If running with 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 3080 Ti		152880 Mpixels/sec
	Difference: 240480 (157%)

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 data (counted in megabytes per second) that can be moved across the external memory interface in one second. It is worked out 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 better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount 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 applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs 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 rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.