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GeForce 8800 GT 1GB vs GeForce GT 430 1GB

Intro

The GeForce 8800 GT 1GB uses a 65 nm design. nVidia has clocked the core speed at 600 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this particular model. It features 112 SPUs along with 56 Texture Address Units and 16 ROPs.

Compare that to the GeForce GT 430 1GB, which makes use of a 40 nm design. nVidia has set the core frequency at 700 MHz. The GDDR3 RAM works at a frequency of 900 MHz on this specific card. It features 96 SPUs as well as 16 Texture Address Units and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB 60 Watts
GeForce 8800 GT 1GB 105 Watts
Difference: 45 Watts (75%)

Memory Bandwidth

The GeForce 8800 GT 1GB should theoretically be quite a bit faster than the GeForce GT 430 1GB overall. (explain)

GeForce 8800 GT 1GB 57600 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 28800 (100%)

Texel Rate

The GeForce 8800 GT 1GB will be quite a bit (more or less 200%) better at texture filtering than the GeForce GT 430 1GB. (explain)

GeForce 8800 GT 1GB 33600 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 22400 (200%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GT 1GB is the winner, by a large margin. (explain)

GeForce 8800 GT 1GB 9600 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 6800 (243%)

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 8800 GT 1GB

Amazon.com

GeForce GT 430 1GB

Amazon.com

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 8800 GT 1GB GeForce GT 430 1GB
Manufacturer nVidia nVidia
Year Dec 2007 October 2010
Code Name G92 GF108
Memory 1024 MB 1024 MB
Core Speed 600 MHz 700 MHz
Memory Speed 1800 MHz 1800 MHz
Power (Max TDP) 105 watts 60 watts
Bandwidth 57600 MB/sec 28800 MB/sec
Texel Rate 33600 Mtexels/sec 11200 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 2800 Mpixels/sec
Unified Shaders 112 96
Texture Mapping Units 56 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 information (measured in MB per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

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