GeForce GTX 560 Ti vs GeForce GTX 660

Intro

Compare those specs to the GeForce GTX 660, which makes use of a 28 nm design. nVidia has set the core frequency at 980 MHz. The GDDR5 RAM works at a speed of 1502 MHz on this specific model. It features 960 SPUs as well as 80 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

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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 660		5063 points
GeForce GTX 560 Ti		3466 points
	Difference: 1597 (46%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 30 Watts (21%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 should in theory be a small bit superior to the GeForce GTX 560 Ti overall. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GTX 560 Ti		128256 MB/sec
	Difference: 15936 (12%)

Texel Rate

The GeForce GTX 660 is much (about 49%) better at anisotropic filtering than the GeForce GTX 560 Ti. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTX 560 Ti		52608 Mtexels/sec
	Difference: 25792 (49%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti is a better choice, but it probably won't make a huge difference. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 2784 (12%)

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 max amount of data (in units of MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per 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 clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.