GeForce GTX 1080 vs GeForce RTX 3090

Intro

Compare that to the GeForce RTX 3090, which uses a 8 nm design. nVidia has set the core speed at 1395 MHz. The GDDR6X RAM is set to run at a frequency of 1219 MHz on this specific card. It features 10496 SPUs as well as 328 TAUs and 112 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080		180 Watts
GeForce RTX 3090		350 Watts
	Difference: 170 Watts (94%)

Memory Bandwidth

The GeForce RTX 3090 should theoretically be a lot faster than the GeForce GTX 1080 in general. (explain)

GeForce RTX 3090		958668 MB/sec
GeForce GTX 1080		327680 MB/sec
	Difference: 630988 (193%)

Texel Rate

The GeForce RTX 3090 should be a lot (approximately 78%) more effective at AF than the GeForce GTX 1080. (explain)

GeForce RTX 3090		457560 Mtexels/sec
GeForce GTX 1080		257120 Mtexels/sec
	Difference: 200440 (78%)

Pixel Rate

The GeForce RTX 3090 should be much (approximately 52%) better at FSAA than the GeForce GTX 1080, and also able to handle higher resolutions without losing too much performance. (explain)

GeForce RTX 3090		156240 Mpixels/sec
GeForce GTX 1080		102848 Mpixels/sec
	Difference: 53392 (52%)

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 MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.