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GeForce GTX 560 Ti vs GeForce GTX 660 Ti

Intro

The GeForce GTX 560 Ti uses a 40 nm design. nVidia has clocked the core frequency at 822 MHz. The GDDR5 RAM runs at a frequency of 1002 MHz on this card. It features 384 SPUs along with 64 Texture Address Units and 32 ROPs.

Compare all that to the GeForce GTX 660 Ti, which has core speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 RAM. It features 1344 SPUs along with 112 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
GeForce GTX 560 Ti 170 Watts
Difference: 20 Watts (13%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 Ti should in theory be a little bit better than the GeForce GTX 560 Ti overall. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce GTX 560 Ti 128256 MB/sec
Difference: 15744 (12%)

Texel Rate

The GeForce GTX 660 Ti should be a lot (approximately 95%) more effective at texture filtering than the GeForce GTX 560 Ti. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce GTX 560 Ti 52608 Mtexels/sec
Difference: 49872 (95%)

Pixel Rate

The GeForce GTX 560 Ti should be a bit (approximately 20%) more effective at anti-aliasing than the GeForce GTX 660 Ti, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 560 Ti 26304 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 4344 (20%)

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

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GeForce GTX 560 Ti

Amazon.com

GeForce GTX 660 Ti

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 560 Ti GeForce GTX 660 Ti
Manufacturer nVidia nVidia
Year January 2011 August 2012
Code Name GF114 GK104
Memory 1024 MB 2048 MB
Core Speed 822 MHz 915 MHz
Memory Speed 4008 MHz 6000 MHz
Power (Max TDP) 170 watts 150 watts
Bandwidth 128256 MB/sec 144000 MB/sec
Texel Rate 52608 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 26304 Mpixels/sec 21960 Mpixels/sec
Unified Shaders 384 1344
Texture Mapping Units 64 112
Render Output Units 32 24
Bus Type GDDR5 GDDR5
Bus Width 256-bit 192-bit
Fab Process 40 nm 28 nm
Transistors 1950 million 3540 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Comments

2 Responses to “GeForce GTX 560 Ti vs GeForce GTX 660 Ti”
Chris Dippenaar says:

Need a comparison between gtx 560 ti 2gb and gtx660ti 2gb please

Steven says:

Thanks for answer
and thanks for this website

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