Geforce GTX 1080 Ti vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which features a core clock frequency of 2055 MHz and a GDDR6 memory speed of 2190 MHz. It also uses a 128-bit bus, and makes use of a 7 nm design. It is comprised 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 Ti		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

Theoretically, the Geforce GTX 1080 Ti should perform much faster than the Radeon RX 6650 XT overall. (explain)

Geforce GTX 1080 Ti		495616 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 208544 (73%)

Texel Rate

The Geforce GTX 1080 Ti should be a lot (more or less 26%) more effective at AF than the Radeon RX 6650 XT. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
Radeon RX 6650 XT		263040 Mtexels/sec
	Difference: 68480 (26%)

Pixel Rate

The Radeon RX 6650 XT should be a small bit (approximately 1%) better at anti-aliasing than the Geforce GTX 1080 Ti, and also capable of handling higher screen resolutions better. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Geforce GTX 1080 Ti		130240 Mpixels/sec
	Difference: 1280 (1%)

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 information (counted in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.