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GeForce GT 320 vs GeForce GT 440 3GB

Intro

The GeForce GT 320 uses a 40 nm design. nVidia has clocked the core speed at 540 MHz. The GDDR3 memory runs at a frequency of 790 MHz on this specific card. It features 72 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

Compare that to the GeForce GT 440 3GB, which comes with core clock speeds of 594 MHz on the GPU, and 900 MHz on the 3072 MB of GDDR3 RAM. It features 144 SPUs as well as 24 TAUs and 24 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
GeForce GT 440 3GB 56 Watts
Difference: 13 Watts (30%)

Memory Bandwidth

The GeForce GT 440 3GB, in theory, should be much faster than the GeForce GT 320 overall. (explain)

GeForce GT 440 3GB 43200 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 17920 (71%)

Texel Rate

The GeForce GT 440 3GB is a bit (more or less 10%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GT 440 3GB 14256 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 1296 (10%)

Pixel Rate

The GeForce GT 440 3GB is much (about 230%) more effective at anti-aliasing than the GeForce GT 320, and should be able to handle higher resolutions more effectively. (explain)

GeForce GT 440 3GB 14256 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 9936 (230%)

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 320

Amazon.com

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GeForce GT 440 3GB

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 320 GeForce GT 440 3GB
Manufacturer nVidia nVidia
Year February 2010 October 2010
Code Name GT215 GF106
Memory 1024 MB 3072 MB
Core Speed 540 MHz 594 MHz
Memory Speed 1580 MHz 1800 MHz
Power (Max TDP) 43 watts 56 watts
Bandwidth 25280 MB/sec 43200 MB/sec
Texel Rate 12960 Mtexels/sec 14256 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 14256 Mpixels/sec
Unified Shaders 72 144
Texture Mapping Units 24 24
Render Output Units 8 24
Bus Type GDDR3 GDDR3
Bus Width 128-bit 192-bit
Fab Process 40 nm 40 nm
Transistors 727 million 1170 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling 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 chip can 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GT 320

Amazon.com

Check prices at:

GeForce GT 440 3GB

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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