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GeForce 8600 GT 512MB DDR2 vs GeForce GTX 660 Ti

Intro

The GeForce 8600 GT 512MB DDR2 makes use of a 80 nm design. nVidia has clocked the core speed at 540 MHz. The DDR2 memory is set to run at a frequency of 400 MHz on this specific model. It features 32 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare all that to the GeForce GTX 660 Ti, which features a GPU core clock speed of 915 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 192-bit bus. It also features 1344 SPUs, 112 Texture Address Units, and 24 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
GeForce GTX 660 Ti 150 Watts
Difference: 103 Watts (219%)

Memory Bandwidth

The GeForce GTX 660 Ti should theoretically perform quite a bit faster than the GeForce 8600 GT 512MB DDR2 in general. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 131200 (1025%)

Texel Rate

The GeForce GTX 660 Ti is much (approximately 1086%) more effective at texture filtering than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 93840 (1086%)

Pixel Rate

The GeForce GTX 660 Ti is quite a bit (about 408%) more effective at anti-aliasing than the GeForce 8600 GT 512MB DDR2, and also will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 660 Ti 21960 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 17640 (408%)

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

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GeForce GTX 660 Ti

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 512MB DDR2 GeForce GTX 660 Ti
Manufacturer nVidia nVidia
Year April 2007 August 2012
Code Name G84 GK104
Memory 512 MB 2048 MB
Core Speed 540 MHz 915 MHz
Memory Speed 800 MHz 6000 MHz
Power (Max TDP) 47 watts 150 watts
Bandwidth 12800 MB/sec 144000 MB/sec
Texel Rate 8640 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 21960 Mpixels/sec
Unified Shaders 32 1344
Texture Mapping Units 16 112
Render Output Units 8 24
Bus Type DDR2 GDDR5
Bus Width 128-bit 192-bit
Fab Process 80 nm 28 nm
Transistors 289 million 3540 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably 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

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce GTX 660 Ti

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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