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GeForce 8600 GT 1GB DDR2 vs GeForce 8800 GT 1GB

Intro

The GeForce 8600 GT 1GB DDR2 uses a 80 nm design. nVidia has clocked the core frequency at 540 MHz. The DDR2 RAM is set to run at a speed of 400 MHz on this specific card. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

Compare those specifications to the GeForce 8800 GT 1GB, which makes use of a 65 nm design. nVidia has clocked the core speed at 600 MHz. The GDDR3 memory works at a speed of 900 MHz on this card. It features 112 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB DDR2 47 Watts
GeForce 8800 GT 1GB 105 Watts
Difference: 58 Watts (123%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GT 1GB should be 350% quicker than the GeForce 8600 GT 1GB DDR2 in general, due to its greater bandwidth. (explain)

GeForce 8800 GT 1GB 57600 MB/sec
GeForce 8600 GT 1GB DDR2 12800 MB/sec
Difference: 44800 (350%)

Texel Rate

The GeForce 8800 GT 1GB should be much (approximately 289%) faster with regards to AF than the GeForce 8600 GT 1GB DDR2. (explain)

GeForce 8800 GT 1GB 33600 Mtexels/sec
GeForce 8600 GT 1GB DDR2 8640 Mtexels/sec
Difference: 24960 (289%)

Pixel Rate

The GeForce 8800 GT 1GB should be a lot (more or less 122%) better at full screen anti-aliasing than the GeForce 8600 GT 1GB DDR2, and will be capable of handling higher screen resolutions better. (explain)

GeForce 8800 GT 1GB 9600 Mpixels/sec
GeForce 8600 GT 1GB DDR2 4320 Mpixels/sec
Difference: 5280 (122%)

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

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GeForce 8800 GT 1GB

Amazon.com

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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 8800 GT 1GB
Manufacturer nVidia nVidia
Year April 2007 Dec 2007
Code Name G84 G92
Memory 1024 MB 1024 MB
Core Speed 540 MHz 600 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 47 watts 105 watts
Bandwidth 12800 MB/sec 57600 MB/sec
Texel Rate 8640 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 32 112
Texture Mapping Units 16 56
Render Output Units 8 16
Bus Type DDR2 GDDR3
Bus Width 128-bit 256-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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 8600 GT 1GB DDR2

Amazon.com

Check prices at:

GeForce 8800 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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