GeForce GTX 1660 Ti vs Geforce GTX 780

Intro

Compare those specifications to the Geforce GTX 780, which comes with GPU clock speed of 863 MHz, and 3072 MB of GDDR5 memory running at 1502 MHz through a 384-bit bus. It also is made up of 2304 SPUs, 192 TAUs, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
Geforce GTX 780		250 Watts
	Difference: 130 Watts (108%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 1660 Ti should in theory be just a bit better than the Geforce GTX 780 overall. (explain)

GeForce GTX 1660 Ti		294912 MB/sec
Geforce GTX 780		288384 MB/sec
	Difference: 6528 (2%)

Texel Rate

The Geforce GTX 780 will be just a bit (about 15%) more effective at anisotropic filtering than the GeForce GTX 1660 Ti. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTX 1660 Ti		144000 Mtexels/sec
	Difference: 21696 (15%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 1660 Ti is superior to the Geforce GTX 780, by a large margin. (explain)

GeForce GTX 1660 Ti		72000 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 30576 (74%)

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 max amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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 of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.