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 makes use of a 384-bit memory bus, and makes use of a 4 nm design. It is made up of 16384 SPUs, 512 TAUs, and 176 ROPs.

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

The GeForce RTX 4090, in theory, should perform a small bit faster than the GeForce RTX 3080 Ti in general. (explain)

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

Texel Rate

The GeForce RTX 4090 should be a lot (approximately 162%) better at 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

The GeForce RTX 4090 is much (more or less 157%) more effective at full screen anti-aliasing than the GeForce RTX 3080 Ti, and will be able to handle higher resolutions more effectively. (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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one 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 - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.