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GeForce GT 320 vs GeForce GT 430 1GB

Intro

The GeForce GT 320 comes with a GPU core clock speed of 540 MHz, and the 1024 MB of GDDR3 RAM is set to run at 790 MHz through a 128-bit bus. It also features 72 SPUs, 24 TAUs, and 8 ROPs.

Compare all of that to the GeForce GT 430 1GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 700 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this model. It features 96 SPUs along with 16 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
GeForce GT 430 1GB 60 Watts
Difference: 17 Watts (40%)

Memory Bandwidth

In theory, the GeForce GT 430 1GB will be 14% quicker than the GeForce GT 320 overall, because of its greater data rate. (explain)

GeForce GT 430 1GB 28800 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 3520 (14%)

Texel Rate

The GeForce GT 320 should be a small bit (more or less 16%) better at AF than the GeForce GT 430 1GB. (explain)

GeForce GT 320 12960 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 1760 (16%)

Pixel Rate

The GeForce GT 320 will be much (about 54%) more effective at FSAA than the GeForce GT 430 1GB, and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GT 320 4320 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 1520 (54%)

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 430 1GB

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 320 GeForce GT 430 1GB
Manufacturer nVidia nVidia
Year February 2010 October 2010
Code Name GT215 GF108
Memory 1024 MB 1024 MB
Core Speed 540 MHz 700 MHz
Memory Speed 1580 MHz 1800 MHz
Power (Max TDP) 43 watts 60 watts
Bandwidth 25280 MB/sec 28800 MB/sec
Texel Rate 12960 Mtexels/sec 11200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2800 Mpixels/sec
Unified Shaders 72 96
Texture Mapping Units 24 16
Render Output Units 8 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 727 million 585 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the 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 the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - 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 430 1GB

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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