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GeForce 8600 GT 512MB DDR2 vs GeForce 8600 GTS

Intro

The GeForce 8600 GT 512MB DDR2 makes use of a 80 nm design. nVidia has set the core speed at 540 MHz. The DDR2 RAM works at a speed of 400 MHz on this specific card. It features 32 SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

Compare that to the GeForce 8600 GTS, which uses a 80 nm design. nVidia has set the core frequency at 675 MHz. The GDDR3 RAM works at a speed of 1000 MHz on this particular card. It features 32 SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

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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

Theoretically speaking, the GeForce 8600 GTS is 150% quicker than the GeForce 8600 GT 512MB DDR2 overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce 8600 GTS is a lot (about 25%) faster with regards to 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 should be a lot (about 25%) faster with regards to full screen anti-aliasing than the GeForce 8600 GT 512MB DDR2, and will be able to handle higher resolutions better. (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: Bandwidth is the largest amount of information (in units of MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range 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 texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the 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 clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum 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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