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GeForce 8600 GTS vs GeForce 8800 GS

Intro

The GeForce 8600 GTS has a GPU core clock speed of 675 MHz, and the 512 MB of GDDR3 RAM runs at 1000 MHz through a 128-bit bus. It also is made up of 32 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare all that to the GeForce 8800 GS, which comes with a clock frequency of 550 MHz and a GDDR3 memory frequency of 800 MHz. It also features a 192-bit memory bus, and makes use of a 65 nm design. It features 96 SPUs, 48 TAUs, and 12 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GTS 75 Watts
GeForce 8800 GS 105 Watts
Difference: 30 Watts (40%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GS should theoretically be just a bit superior to the GeForce 8600 GTS in general. (explain)

GeForce 8800 GS 38400 MB/sec
GeForce 8600 GTS 32000 MB/sec
Difference: 6400 (20%)

Texel Rate

The GeForce 8800 GS is a lot (more or less 144%) more effective at anisotropic filtering than the GeForce 8600 GTS. (explain)

GeForce 8800 GS 26400 Mtexels/sec
GeForce 8600 GTS 10800 Mtexels/sec
Difference: 15600 (144%)

Pixel Rate

The GeForce 8800 GS should be quite a bit (approximately 22%) faster with regards to FSAA than the GeForce 8600 GTS, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce 8800 GS 6600 Mpixels/sec
GeForce 8600 GTS 5400 Mpixels/sec
Difference: 1200 (22%)

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 GTS

Amazon.com

Check prices at:

GeForce 8800 GS

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 GTS GeForce 8800 GS
Manufacturer nVidia nVidia
Year April 2007 Jan 2008
Code Name G84 G92
Memory 512 MB 384 MB
Core Speed 675 MHz 550 MHz
Memory Speed 2000 MHz 1600 MHz
Power (Max TDP) 75 watts 105 watts
Bandwidth 32000 MB/sec 38400 MB/sec
Texel Rate 10800 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 5400 Mpixels/sec 6600 Mpixels/sec
Unified Shaders 32 96
Texture Mapping Units 16 48
Render Output Units 8 12
Bus Type GDDR3 GDDR3
Bus Width 128-bit 192-bit
Fab Process 80 nm 65 nm
Transistors 289 million 754 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Display Prices

Hide Prices

GeForce 8600 GTS

Amazon.com

Check prices at:

GeForce 8800 GS

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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