GeForce GTX 660 Ti vs GeForce GTX 780 Ti

Intro

Compare all that to the GeForce GTX 780 Ti, which comes with core speeds of 875 MHz on the GPU, and 1750 MHz on the 3072 MB of GDDR5 memory. It features 2880 SPUs along with 240 Texture Address Units and 48 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 780 Ti		10900 points
GeForce GTX 660 Ti		6013 points
	Difference: 4887 (81%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 780 Ti is 133% faster than the GeForce GTX 660 Ti overall, because of its greater data rate. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 192000 (133%)

Texel Rate

The GeForce GTX 780 Ti will be quite a bit (about 105%) better at anisotropic filtering than the GeForce GTX 660 Ti. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 107520 (105%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 780 Ti is superior to the GeForce GTX 660 Ti, and very much so. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 20040 (91%)

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 data (counted in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.