GeForce GTX 1660 Ti vs GeForce GTX 980

Intro

Compare those specifications to the GeForce GTX 980, which comes with clock speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
GeForce GTX 980		165 Watts
	Difference: 45 Watts (38%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1660 Ti should be much faster than the GeForce GTX 980 in general. (explain)

GeForce GTX 1660 Ti		294912 MB/sec
GeForce GTX 980		224000 MB/sec
	Difference: 70912 (32%)

Texel Rate

The GeForce GTX 980 is a little bit (more or less 0%) faster with regards to texture filtering than the GeForce GTX 1660 Ti. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GTX 1660 Ti		144000 Mtexels/sec
	Difference: 128 (0%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 980 is the winner, though only just barely. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GTX 1660 Ti		72000 Mpixels/sec
	Difference: 64 (0%)

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 largest amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 applied per second. This number is calculated by multiplying the total amount of texture units of the card 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.