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GeForce GT 430 1GB vs GeForce GT 440 3GB

Intro

The GeForce GT 430 1GB comes with a GPU core speed of 700 MHz, and the 1024 MB of GDDR3 RAM runs at 900 MHz through a 128-bit bus. It also features 96 SPUs, 16 TAUs, and 4 Raster Operation Units.

Compare all that to the GeForce GT 440 3GB, which comes with a core clock frequency of 594 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 192-bit memory bus, and uses a 40 nm design. It is comprised of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB 56 Watts
GeForce GT 430 1GB 60 Watts
Difference: 4 Watts (7%)

Memory Bandwidth

Performance-wise, the GeForce GT 440 3GB should theoretically be a lot superior to the GeForce GT 430 1GB in general. (explain)

GeForce GT 440 3GB 43200 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 14400 (50%)

Texel Rate

The GeForce GT 440 3GB should be much (approximately 27%) more effective at texture filtering than the GeForce GT 430 1GB. (explain)

GeForce GT 440 3GB 14256 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 3056 (27%)

Pixel Rate

The GeForce GT 440 3GB will be a lot (approximately 409%) better at AA than the GeForce GT 430 1GB, and also should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GT 440 3GB 14256 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 11456 (409%)

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 430 1GB

Amazon.com

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GeForce GT 440 3GB

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 GT 430 1GB GeForce GT 440 3GB
Manufacturer nVidia nVidia
Year October 2010 October 2010
Code Name GF108 GF106
Memory 1024 MB 3072 MB
Core Speed 700 MHz 594 MHz
Memory Speed 1800 MHz 1800 MHz
Power (Max TDP) 60 watts 56 watts
Bandwidth 28800 MB/sec 43200 MB/sec
Texel Rate 11200 Mtexels/sec 14256 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 14256 Mpixels/sec
Unified Shaders 96 144
Texture Mapping Units 16 24
Render Output Units 4 24
Bus Type GDDR3 GDDR3
Bus Width 128-bit 192-bit
Fab Process 40 nm 40 nm
Transistors 585 million 1170 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 maximum amount of data (in units of MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 processed per second. This figure 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GT 430 1GB

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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