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GeForce GTX 470 vs GeForce GTX 660 Ti


Intro

The GeForce GTX 470 features a GPU core clock speed of 607 MHz, and the 1280 MB of GDDR5 memory runs at 837 MHz through a 320-bit bus. It also features 448 Stream Processors, 56 Texture Address Units, and 40 Raster Operation Units.

Compare that to the GeForce GTX 660 Ti, which uses a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this model. It features 1344 SPUs as well as 112 Texture Address Units 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 6010 points
GeForce GTX 470 2940 points
Difference: 3070 (104%)

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

As far as performance goes, the GeForce GTX 660 Ti should theoretically be a small bit better than the GeForce GTX 470 overall. (explain)

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

Texel Rate

The GeForce GTX 660 Ti is quite a bit (approximately 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 should be just a bit (about 11%) faster with regards to full screen anti-aliasing than the GeForce GTX 660 Ti, and also will be capable of handling higher resolutions more effectively. (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

GeForce GTX 470

GeForce GTX 660 Ti

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: Bandwidth is the largest amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units of the card 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated 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 outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

GeForce GTX 470

GeForce GTX 660 Ti

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