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GeForce 8600 GT 512MB DDR2 vs GeForce 8600 GTS

Intro

The GeForce 8600 GT 512MB DDR2 comes with a clock speed of 540 MHz and a DDR2 memory speed of 400 MHz. It also makes use of a 128-bit bus, and makes use of a 80 nm design. It features 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare that to the GeForce 8600 GTS, which has GPU core speed of 675 MHz, and 512 MB of GDDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also is made up of 32 SPUs, 16 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
GeForce 8600 GTS 75 Watts
Difference: 28 Watts (60%)

Memory Bandwidth

The GeForce 8600 GTS, in theory, should perform a lot faster than the GeForce 8600 GT 512MB DDR2 in general. (explain)

GeForce 8600 GTS 32000 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 19200 (150%)

Texel Rate

The GeForce 8600 GTS will be much (more or less 25%) more effective at AF than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce 8600 GTS 10800 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 2160 (25%)

Pixel Rate

The GeForce 8600 GTS will be a lot (about 25%) better at FSAA than the GeForce 8600 GT 512MB DDR2, and capable of handling higher resolutions more effectively. (explain)

GeForce 8600 GTS 5400 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 1080 (25%)

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 512MB DDR2

Amazon.com

Check prices at:

GeForce 8600 GTS

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 512MB DDR2 GeForce 8600 GTS
Manufacturer nVidia nVidia
Year April 2007 April 2007
Code Name G84 G84
Memory 512 MB 512 MB
Core Speed 540 MHz 675 MHz
Memory Speed 800 MHz 2000 MHz
Power (Max TDP) 47 watts 75 watts
Bandwidth 12800 MB/sec 32000 MB/sec
Texel Rate 8640 Mtexels/sec 10800 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 5400 Mpixels/sec
Unified Shaders 32 32
Texture Mapping Units 16 16
Render Output Units 8 8
Bus Type DDR2 GDDR3
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: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce 8600 GTS

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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