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GeForce GTX 470 vs GeForce GTX 660 Ti

Intro

The GeForce GTX 470 comes with a GPU core clock speed of 607 MHz, and the 1280 MB of GDDR5 memory is set to run at 837 MHz through a 320-bit bus. It also features 448 Stream Processors, 56 Texture Address Units, and 40 ROPs.

Compare those specs to the GeForce GTX 660 Ti, which features a clock speed of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 192-bit bus, and uses a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
GeForce GTX 470 215 Watts
Difference: 65 Watts (43%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should be a small bit faster than the GeForce GTX 470 in general. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce GTX 470 133920 MB/sec
Difference: 10080 (8%)

Texel Rate

The GeForce GTX 660 Ti will be a lot (about 201%) more effective at anisotropic filtering than the GeForce GTX 470. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 68488 (201%)

Pixel Rate

The GeForce GTX 470 will be a small bit (about 11%) faster with regards to anti-aliasing than the GeForce GTX 660 Ti, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 470 24280 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 2320 (11%)

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 470

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 470 GeForce GTX 660 Ti
Manufacturer nVidia nVidia
Year March 2010 August 2012
Code Name GF100 GK104
Memory 1280 MB 2048 MB
Core Speed 607 MHz 915 MHz
Memory Speed 3348 MHz 6000 MHz
Power (Max TDP) 215 watts 150 watts
Bandwidth 133920 MB/sec 144000 MB/sec
Texel Rate 33992 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 21960 Mpixels/sec
Unified Shaders 448 1344
Texture Mapping Units 56 112
Render Output Units 40 24
Bus Type GDDR5 GDDR5
Bus Width 320-bit 192-bit
Fab Process 40 nm 28 nm
Transistors 3000 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 max amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its 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 the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

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