GeForce GTX 560 Ti vs GeForce GTX 660

Intro

Compare all of that to the GeForce GTX 660, which comes with a GPU core clock speed of 980 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 192-bit bus. It also is comprised of 960 SPUs, 80 Texture Address Units, and 24 Raster Operation 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

Theoretically speaking, the GeForce GTX 660 should be 12% quicker than the GeForce GTX 560 Ti in general, due to its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 660 should be quite a bit (approximately 49%) better at texture 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

The GeForce GTX 560 Ti will be a bit (approximately 12%) faster with regards to AA than the GeForce GTX 660, and should be capable of handling higher resolutions without losing too much performance. (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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.