GeForce RTX 3080 Ti vs Radeon RX 6650 XT

Intro

Compare that to the Radeon RX 6650 XT, which has a GPU core clock speed of 2055 MHz, and 8192 MB of GDDR6 RAM set to run at 2190 MHz through a 128-bit bus. It also features 2048 Stream Processors, 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 RTX 3080 Ti		350 Watts
	Difference: 174 Watts (99%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3080 Ti will be 225% faster than the Radeon RX 6650 XT in general, because of its higher bandwidth. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 647225 (225%)

Texel Rate

The GeForce RTX 3080 Ti should be quite a bit (approximately 66%) faster with regards to AF than the Radeon RX 6650 XT. (explain)

GeForce RTX 3080 Ti		436800 Mtexels/sec
Radeon RX 6650 XT		263040 Mtexels/sec
	Difference: 173760 (66%)

Pixel Rate

If using a high resolution is important to you, then the GeForce RTX 3080 Ti is the winner, but it probably won't make a huge difference. (explain)

GeForce RTX 3080 Ti		152880 Mpixels/sec
Radeon RX 6650 XT		131520 Mpixels/sec
	Difference: 21360 (16%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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 of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.