GeForce RTX 3080 Ti vs GeForce RTX 3090

Intro

Compare those specs to the GeForce RTX 3090, which uses a 8 nm design. nVidia has set the core speed at 1395 MHz. The GDDR6X RAM works at a speed of 1219 MHz on this card. It features 10496 SPUs along with 328 Texture Address Units and 112 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3090 should be 3% quicker than the GeForce RTX 3080 Ti overall, because of its greater bandwidth. (explain)

GeForce RTX 3090		958668 MB/sec
GeForce RTX 3080 Ti		934297 MB/sec
	Difference: 24371 (3%)

Texel Rate

The GeForce RTX 3090 will be a bit (approximately 5%) better at texture filtering than the GeForce RTX 3080 Ti. (explain)

GeForce RTX 3090		457560 Mtexels/sec
GeForce RTX 3080 Ti		436800 Mtexels/sec
	Difference: 20760 (5%)

Pixel Rate

The GeForce RTX 3090 should be a little bit (more or less 2%) more effective at anti-aliasing than the GeForce RTX 3080 Ti, and will be able to handle higher screen resolutions better. (explain)

GeForce RTX 3090		156240 Mpixels/sec
GeForce RTX 3080 Ti		152880 Mpixels/sec
	Difference: 3360 (2%)

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 max amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 amount of texture map elements (texels) that are processed 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 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.