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GeForce GT 440 3GB vs GeForce GTX 470

Intro

The GeForce GT 440 3GB has a clock speed of 594 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 192-bit bus, and makes use of a 40 nm design. It is comprised of 144 SPUs, 24 Texture Address Units, and 24 ROPs.

Compare that to the GeForce GTX 470, which comes with GPU core speed of 607 MHz, and 1280 MB of GDDR5 memory set to run at 837 MHz through a 320-bit bus. It also is made up of 448 Stream Processors, 56 TAUs, and 40 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB 56 Watts
GeForce GTX 470 215 Watts
Difference: 159 Watts (284%)

Memory Bandwidth

Performance-wise, the GeForce GTX 470 should in theory be quite a bit superior to the GeForce GT 440 3GB overall. (explain)

GeForce GTX 470 133920 MB/sec
GeForce GT 440 3GB 43200 MB/sec
Difference: 90720 (210%)

Texel Rate

The GeForce GTX 470 should be quite a bit (more or less 138%) faster with regards to texture filtering than the GeForce GT 440 3GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
GeForce GT 440 3GB 14256 Mtexels/sec
Difference: 19736 (138%)

Pixel Rate

The GeForce GTX 470 should be quite a bit (more or less 70%) more effective at full screen anti-aliasing than the GeForce GT 440 3GB, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 470 24280 Mpixels/sec
GeForce GT 440 3GB 14256 Mpixels/sec
Difference: 10024 (70%)

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 GT 440 3GB

Amazon.com

Check prices at:

GeForce GTX 470

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.

Specifications

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Model GeForce GT 440 3GB GeForce GTX 470
Manufacturer nVidia nVidia
Year October 2010 March 2010
Code Name GF106 GF100
Memory 3072 MB 1280 MB
Core Speed 594 MHz 607 MHz
Memory Speed 1800 MHz 3348 MHz
Power (Max TDP) 56 watts 215 watts
Bandwidth 43200 MB/sec 133920 MB/sec
Texel Rate 14256 Mtexels/sec 33992 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 24280 Mpixels/sec
Unified Shaders 144 448
Texture Mapping Units 24 56
Render Output Units 24 40
Bus Type GDDR3 GDDR5
Bus Width 192-bit 320-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 3000 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of 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 higher the texel rate, the better the graphics 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 write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also 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, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GT 440 3GB

Amazon.com

Check prices at:

GeForce GTX 470

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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