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GeForce GTX 460 2GB vs GeForce GTX 660 Ti

Intro

The GeForce GTX 460 2GB makes use of a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 memory works at a speed of 900 MHz on this model. It features 336 SPUs along with 56 Texture Address Units and 32 ROPs.

Compare those specifications to the GeForce GTX 660 Ti, which uses a 28 nm design. nVidia has clocked the core speed at 915 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this particular model. It features 1344 SPUs along with 112 Texture Address Units and 24 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
GeForce GTX 460 2GB 160 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

The GeForce GTX 660 Ti should in theory perform quite a bit faster than the GeForce GTX 460 2GB overall. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce GTX 460 2GB 115200 MB/sec
Difference: 28800 (25%)

Texel Rate

The GeForce GTX 660 Ti will be quite a bit (more or less 171%) more effective at AF than the GeForce GTX 460 2GB. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce GTX 460 2GB 37800 Mtexels/sec
Difference: 64680 (171%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 660 Ti is the winner, not by a very large margin though. (explain)

GeForce GTX 660 Ti 21960 Mpixels/sec
GeForce GTX 460 2GB 21600 Mpixels/sec
Difference: 360 (2%)

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 460 2GB

Amazon.com

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GeForce GTX 660 Ti

Amazon.com

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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 460 2GB GeForce GTX 660 Ti
Manufacturer nVidia nVidia
Year July 2010 August 2012
Code Name GF104 GK104
Memory 2048 MB 2048 MB
Core Speed 675 MHz 915 MHz
Memory Speed 3600 MHz 6000 MHz
Power (Max TDP) 160 watts 150 watts
Bandwidth 115200 MB/sec 144000 MB/sec
Texel Rate 37800 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 21960 Mpixels/sec
Unified Shaders 336 1344
Texture Mapping Units 56 112
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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core 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 output rate is also dependant 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.

Display Prices

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GeForce GTX 460 2GB

Amazon.com

Check prices at:

GeForce GTX 660 Ti

Amazon.com

Check prices at:

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.

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