GeForce GTX 1080 vs GeForce GTX 1660 Ti

Intro

Compare those specifications to the GeForce GTX 1660 Ti, which comes with a GPU core clock speed of 1500 MHz, and 6144 MB of GDDR6 memory set to run at 1500 MHz through a 192-bit bus. It also is comprised of 1536 Stream Processors, 96 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
GeForce GTX 1080		180 Watts
	Difference: 60 Watts (50%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 1080 should theoretically be a bit better than the GeForce GTX 1660 Ti overall. (explain)

GeForce GTX 1080		327680 MB/sec
GeForce GTX 1660 Ti		294912 MB/sec
	Difference: 32768 (11%)

Texel Rate

The GeForce GTX 1080 is quite a bit (approximately 79%) faster with regards to texture filtering than the GeForce GTX 1660 Ti. (explain)

GeForce GTX 1080		257120 Mtexels/sec
GeForce GTX 1660 Ti		144000 Mtexels/sec
	Difference: 113120 (79%)

Pixel Rate

The GeForce GTX 1080 should be a lot (approximately 43%) more effective at anti-aliasing than the GeForce GTX 1660 Ti, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 1080		102848 Mpixels/sec
GeForce GTX 1660 Ti		72000 Mpixels/sec
	Difference: 30848 (43%)

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 (counted in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.