GeForce GTX 980 Ti vs Radeon RX 6650 XT

Intro

Compare those specs to the Radeon RX 6650 XT, which has a clock speed of 2055 MHz and a GDDR6 memory frequency of 2190 MHz. It also makes use of 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 980 Ti		250 Watts
	Difference: 74 Watts (42%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 Ti should be 17% quicker than the Radeon RX 6650 XT overall, due to its higher data rate. (explain)

GeForce GTX 980 Ti		336000 MB/sec
Radeon RX 6650 XT		287072 MB/sec
	Difference: 48928 (17%)

Texel Rate

The Radeon RX 6650 XT is much (more or less 49%) better at texture filtering than the GeForce GTX 980 Ti. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
GeForce GTX 980 Ti		176000 Mtexels/sec
	Difference: 87040 (49%)

Pixel Rate

The Radeon RX 6650 XT should be quite a bit (more or less 37%) better at full screen anti-aliasing than the GeForce GTX 980 Ti, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
GeForce GTX 980 Ti		96000 Mpixels/sec
	Difference: 35520 (37%)

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 information (counted in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that are processed in one second. This number 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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