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GeForce 9800 GTX vs GeForce GT 430

Intro

The GeForce 9800 GTX has a clock speed of 675 MHz and a GDDR3 memory speed of 1100 MHz. It also makes use of a 256-bit bus, and makes use of a 65 nm design. It is made up of 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

Compare that to the GeForce GT 430, which features GPU core speed of 700 MHz, and 512 MB of GDDR3 memory running at 900 MHz through a 128-bit bus. It also is comprised of 96 SPUs, 16 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 60 Watts
GeForce 9800 GTX 140 Watts
Difference: 80 Watts (133%)

Memory Bandwidth

In theory, the GeForce 9800 GTX is 144% faster than the GeForce GT 430 overall, due to its greater bandwidth. (explain)

GeForce 9800 GTX 70400 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 41600 (144%)

Texel Rate

The GeForce 9800 GTX should be much (more or less 286%) better at AF than the GeForce GT 430. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
GeForce GT 430 11200 Mtexels/sec
Difference: 32000 (286%)

Pixel Rate

The GeForce 9800 GTX will be quite a bit (about 286%) more effective at full screen anti-aliasing than the GeForce GT 430, and also able to handle higher resolutions better. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 8000 (286%)

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 9800 GTX

Amazon.com

Check prices at:

GeForce GT 430

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 9800 GTX GeForce GT 430
Manufacturer nVidia nVidia
Year April 2008 October 2010
Code Name G92 GF108
Memory 512 MB 512 MB
Core Speed 675 MHz 700 MHz
Memory Speed 2200 MHz 1800 MHz
Power (Max TDP) 140 watts 60 watts
Bandwidth 70400 MB/sec 28800 MB/sec
Texel Rate 43200 Mtexels/sec 11200 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 2800 Mpixels/sec
Unified Shaders 128 96
Texture Mapping Units 64 16
Render Output Units 16 4
Bus Type GDDR3 GDDR3
Bus Width 256-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 585 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 number is worked out by multiplying the total texture units of the card 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. 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 rate also depends on quite a few other factors, especially 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 9800 GTX

Amazon.com

Check prices at:

GeForce GT 430

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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