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GeForce 8600 GT 1GB DDR2 vs GeForce 8600 GT 512MB DDR2

Intro

The GeForce 8600 GT 1GB DDR2 comes with a clock speed of 540 MHz and a DDR2 memory frequency of 400 MHz. It also features a 128-bit bus, and uses a 80 nm design. It features 32 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare those specifications to the GeForce 8600 GT 512MB DDR2, which comes with GPU clock speed of 540 MHz, and 512 MB of DDR2 RAM set to run at 400 MHz through a 128-bit bus. It also is made up of 32 SPUs, 16 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Both cards have exactly the same bandwidth, so in theory they should perform the same. (explain)

Texel Rate

Both cards have exactly the same texel rate, so theoretically they should be equally good at at AF. (explain)

Pixel Rate

Both cards have exactly the same pixel rate, so theoretically they should perform equally good at at anti-aliasing, and be capable of handling the same resolutions. (explain)

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 8600 GT 1GB DDR2

Amazon.com

Check prices at:

GeForce 8600 GT 512MB DDR2

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 8600 GT 1GB DDR2 GeForce 8600 GT 512MB DDR2
Manufacturer nVidia nVidia
Year April 2007 April 2007
Code Name G84 G84
Memory 1024 MB 512 MB
Core Speed 540 MHz 540 MHz
Memory Speed 800 MHz 800 MHz
Power (Max TDP) 47 watts 47 watts
Bandwidth 12800 MB/sec 12800 MB/sec
Texel Rate 8640 Mtexels/sec 8640 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 4320 Mpixels/sec
Unified Shaders 32 32
Texture Mapping Units 16 16
Render Output Units 8 8
Bus Type DDR2 DDR2
Bus Width 128-bit 128-bit
Fab Process 80 nm 80 nm
Transistors 289 million 289 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at 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 video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out 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 outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 1GB DDR2

Amazon.com

Check prices at:

GeForce 8600 GT 512MB DDR2

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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