GeForce GTX 1080 vs Radeon RX 6650 XT

Intro

Compare all that to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has set the core frequency at 2055 MHz. The GDDR6 RAM works at a speed of 2190 MHz on this particular model. It features 2048 SPUs along with 128 TAUs and 64 ROPs.

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

Performance-wise, the GeForce GTX 1080 should theoretically be a bit better than 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 small bit (approximately 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

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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 can be applied in one second. This number is calculated by multiplying the total texture units 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 in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.