GeForce GTX 980 Ti vs Radeon RX 6650 XT

Intro

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

The GeForce GTX 980 Ti, in theory, should perform a little bit faster than the Radeon RX 6650 XT overall. (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 (about 49%) better at AF 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 much (approximately 37%) more effective at AA than the GeForce GTX 980 Ti, and also should be capable of handling higher resolutions while still performing well. (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 maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.