GeForce GTX 1660 Ti vs Geforce GTX 780

Intro

Compare those specifications to the Geforce GTX 780, which features core speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 memory. It features 2304 SPUs along with 192 TAUs and 48 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 780		250 Watts
	Difference: 130 Watts (108%)

Memory Bandwidth

The GeForce GTX 1660 Ti should in theory be just a bit faster 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 is a bit (more or less 15%) better at texture 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

The GeForce GTX 1660 Ti is a lot (about 74%) more effective at FSAA than the Geforce GTX 780, and also should be capable of handling higher resolutions while still performing well. (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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.