GeForce GTX 1660 Ti vs GeForce GTX 980 Ti

Intro

Compare that to the GeForce GTX 980 Ti, which uses a 28 nm design. nVidia has set the core frequency at 1000 MHz. The GDDR5 memory runs at a frequency of 1750 MHz on this model. It features 2816 SPUs along with 176 Texture Address Units and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
GeForce GTX 980 Ti		250 Watts
	Difference: 130 Watts (108%)

Memory Bandwidth

The GeForce GTX 980 Ti, in theory, should be a little bit faster than the GeForce GTX 1660 Ti in general. (explain)

GeForce GTX 980 Ti		336000 MB/sec
GeForce GTX 1660 Ti		294912 MB/sec
	Difference: 41088 (14%)

Texel Rate

The GeForce GTX 980 Ti is quite a bit (approximately 22%) more effective at AF than the GeForce GTX 1660 Ti. (explain)

GeForce GTX 980 Ti		176000 Mtexels/sec
GeForce GTX 1660 Ti		144000 Mtexels/sec
	Difference: 32000 (22%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 980 Ti is superior to the GeForce GTX 1660 Ti, by a large margin. (explain)

GeForce GTX 980 Ti		96000 Mpixels/sec
GeForce GTX 1660 Ti		72000 Mpixels/sec
	Difference: 24000 (33%)

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 max amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses 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 texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.