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GeForce 8400 GS 512MB vs GeForce 9600 GT 1GB

Intro

The GeForce 8400 GS 512MB features a GPU core speed of 650 MHz, and the 512 MB of DDR2 memory is set to run at 400 MHz through a 64-bit bus. It also is made up of 16 SPUs, 8 TAUs, and 4 Raster Operation Units.

Compare those specifications to the GeForce 9600 GT 1GB, which comes with clock speeds of 650 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 64 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB 40 Watts
GeForce 9600 GT 1GB 95 Watts
Difference: 55 Watts (138%)

Memory Bandwidth

The GeForce 9600 GT 1GB should theoretically be quite a bit faster than the GeForce 8400 GS 512MB in general. (explain)

GeForce 9600 GT 1GB 57600 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 51200 (800%)

Texel Rate

The GeForce 9600 GT 1GB will be a lot (about 300%) more effective at AF than the GeForce 8400 GS 512MB. (explain)

GeForce 9600 GT 1GB 20800 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 15600 (300%)

Pixel Rate

The GeForce 9600 GT 1GB will be much (more or less 300%) more effective at anti-aliasing than the GeForce 8400 GS 512MB, and will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce 9600 GT 1GB 10400 Mpixels/sec
GeForce 8400 GS 512MB 2600 Mpixels/sec
Difference: 7800 (300%)

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 8400 GS 512MB

Amazon.com

Check prices at:

GeForce 9600 GT 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.

Specifications

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Model GeForce 8400 GS 512MB GeForce 9600 GT 1GB
Manufacturer nVidia nVidia
Year June 2007 Feb 2008
Code Name G86 G94a/b
Memory 512 MB 1024 MB
Core Speed 650 MHz 650 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 40 watts 95 watts
Bandwidth 6400 MB/sec 57600 MB/sec
Texel Rate 5200 Mtexels/sec 20800 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 10400 Mpixels/sec
Unified Shaders 16 64
Texture Mapping Units 8 32
Render Output Units 4 16
Bus Type DDR2 GDDR3
Bus Width 64-bit 256-bit
Fab Process 80 nm 65/55 nm
Transistors 210 million 505 million
Bus PCIe x16, PCI PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write 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 card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8400 GS 512MB

Amazon.com

Check prices at:

GeForce 9600 GT 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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