GeForce GTX 1080 vs Radeon RX 6650 XT

Intro

Compare all that to the Radeon RX 6650 XT, which comes with a clock speed of 2055 MHz and a GDDR6 memory speed of 2190 MHz. It also uses a 128-bit 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

Hide Graphs

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

Performance-wise, the GeForce GTX 1080 should theoretically be just a bit superior to the Radeon RX 6650 XT in general. (explain)

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

Texel Rate

The Radeon RX 6650 XT is a bit (approximately 2%) faster with regards to 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

If using a high resolution is important to you, then the Radeon RX 6650 XT is the winner, and very much so. (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 maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.