GeForce GTX 1660 Ti vs GeForce GTX 660

Intro

Compare all that to the GeForce GTX 660, which has clock speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 960 SPUs as well as 80 Texture Address Units and 24 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 660		140 Watts
	Difference: 20 Watts (17%)

Memory Bandwidth

Performance-wise, the GeForce GTX 1660 Ti should theoretically be much superior to the GeForce GTX 660 overall. (explain)

GeForce GTX 1660 Ti		294912 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 150720 (105%)

Texel Rate

The GeForce GTX 1660 Ti should be quite a bit (more or less 84%) better at AF than the GeForce GTX 660. (explain)

GeForce GTX 1660 Ti		144000 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 65600 (84%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 1660 Ti is the winner, by far. (explain)

GeForce GTX 1660 Ti		72000 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 48480 (206%)

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 MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.