GeForce GTX 780 Ti vs Radeon RX 6600 XT

Intro

Compare all that to the Radeon RX 6600 XT, which comes with a clock speed of 1968 MHz and a GDDR6 memory frequency of 2000 MHz. It also features a 128-bit bus, and makes use of a 7 nm design. It features 2048 SPUs, 128 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 90 Watts (56%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 780 Ti will be 28% faster than the Radeon RX 6600 XT in general, because of its greater bandwidth. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 73856 (28%)

Texel Rate

The Radeon RX 6600 XT is just a bit (more or less 20%) more effective at AF than the GeForce GTX 780 Ti. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
GeForce GTX 780 Ti		210000 Mtexels/sec
	Difference: 41904 (20%)

Pixel Rate

The Radeon RX 6600 XT should be quite a bit (approximately 200%) better at AA than the GeForce GTX 780 Ti, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
GeForce GTX 780 Ti		42000 Mpixels/sec
	Difference: 83952 (200%)

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 largest amount of information (counted in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core 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 also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.