GeForce RTX 2080 Ti vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has clocked the core frequency at 2055 MHz. The GDDR6 memory works at a frequency of 2190 MHz on this particular card. It features 2048 SPUs along with 128 Texture Address Units 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 RTX 2080 Ti		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

Performance-wise, the GeForce RTX 2080 Ti should in theory be much superior to the Radeon RX 6650 XT overall. (explain)

GeForce RTX 2080 Ti		630784 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 343712 (120%)

Texel Rate

The GeForce RTX 2080 Ti should be a lot (more or less 40%) more effective at anisotropic filtering than the Radeon RX 6650 XT. (explain)

GeForce RTX 2080 Ti		367200 Mtexels/sec
Radeon RX 6650 XT		263040 Mtexels/sec
	Difference: 104160 (40%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 6650 XT is superior to the GeForce RTX 2080 Ti, not by a very large margin though. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
GeForce RTX 2080 Ti		118800 Mpixels/sec
	Difference: 12720 (11%)

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 information (measured in MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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