Geforce GTX 1080 Ti vs Radeon RX 6600 XT

Intro

Compare that to the Radeon RX 6600 XT, which has a clock speed of 1968 MHz and a GDDR6 memory speed of 2000 MHz. It also uses a 128-bit memory bus, and uses a 7 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Geforce GTX 1080 Ti		250 Watts
	Difference: 90 Watts (56%)

Memory Bandwidth

In theory, the Geforce GTX 1080 Ti should be 89% faster than the Radeon RX 6600 XT in general, because of its greater data rate. (explain)

Geforce GTX 1080 Ti		495616 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 233472 (89%)

Texel Rate

The Geforce GTX 1080 Ti should be quite a bit (more or less 32%) more effective at texture filtering than the Radeon RX 6600 XT. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
Radeon RX 6600 XT		251904 Mtexels/sec
	Difference: 79616 (32%)

Pixel Rate

The Geforce GTX 1080 Ti will be just a bit (about 3%) more effective at full screen anti-aliasing than the Radeon RX 6600 XT, and should be able to handle higher resolutions without losing too much performance. (explain)

Geforce GTX 1080 Ti		130240 Mpixels/sec
Radeon RX 6600 XT		125952 Mpixels/sec
	Difference: 4288 (3%)

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 (measured in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 texture map elements (texels) that are applied per second. This is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.