GeForce GTX 560 vs GeForce GTX 660 Ti

Intro

Compare all of that to the GeForce GTX 660 Ti, which comes with a GPU core clock speed of 915 MHz, and 2048 MB of GDDR5 memory set to run at 1500 MHz through a 192-bit bus. It also features 1344 Stream Processors, 112 TAUs, and 24 ROPs.

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 Ti		6013 points
GeForce GTX 560		3030 points
	Difference: 2983 (98%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce GTX 660 Ti, in theory, should perform a little bit faster than the GeForce GTX 560 overall. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 560		128128 MB/sec
	Difference: 15872 (12%)

Texel Rate

The GeForce GTX 660 Ti is quite a bit (more or less 126%) faster with regards to anisotropic filtering than the GeForce GTX 560. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 57120 (126%)

Pixel Rate

The GeForce GTX 560 will be a bit (more or less 18%) more effective at FSAA than the GeForce GTX 660 Ti, and also should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 3960 (18%)

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 (measured in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. 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 bandwidth is, the lower the ability to reach the maximum fill rate.