GeForce GTX 660 vs GeForce GTX 780 Ti

Intro

Compare those specs to the GeForce GTX 780 Ti, which features clock speeds of 875 MHz on the GPU, and 1750 MHz on the 3072 MB of GDDR5 memory. It features 2880 SPUs as well as 240 TAUs 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		5063 points
	Difference: 5837 (115%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 110 Watts (79%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 780 Ti should in theory be much better than the GeForce GTX 660 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 191808 (133%)

Texel Rate

The GeForce GTX 780 Ti is much (approximately 168%) faster with regards to AF than the GeForce GTX 660. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 131600 (168%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 780 Ti is superior to the GeForce GTX 660, by far. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 18480 (79%)

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 data (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 maximum number of pixels the video card could possibly write 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 core 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.