GeForce GTX 1080 vs Radeon RX 6650 XT

Intro

Compare those specs to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has set the core speed at 2055 MHz. The GDDR6 memory works at a speed of 2190 MHz on this particular model. It features 2048 SPUs as well as 128 TAUs and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
GeForce GTX 1080		180 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1080 is 14% faster than the Radeon RX 6650 XT overall, because of its greater data rate. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 40608 (14%)

Texel Rate

The Radeon RX 6650 XT should be a bit (more or less 2%) more effective at AF than the GeForce GTX 1080. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
GeForce GTX 1080		257120 Mtexels/sec
	Difference: 5920 (2%)

Pixel Rate

The Radeon RX 6650 XT should be quite a bit (about 28%) better at anti-aliasing than the GeForce GTX 1080, and also will be capable of handling higher screen resolutions better. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
GeForce GTX 1080		102848 Mpixels/sec
	Difference: 28672 (28%)

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 MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.