GeForce GTX 1660 Ti vs GeForce GTX 980

Intro

Compare all of that to the GeForce GTX 980, which features core 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 TAUs 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

In theory, the GeForce GTX 1660 Ti will be 32% quicker than the GeForce GTX 980 overall, due to its greater data rate. (explain)

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

Texel Rate

The GeForce GTX 980 will be just a bit (approximately 0%) faster with regards to AF 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

The GeForce GTX 980 will be just a bit (more or less 0%) faster with regards to anti-aliasing than the GeForce GTX 1660 Ti, and also should be capable of handling higher resolutions better. (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 maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the 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 amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.