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GeForce 8600 GT 512MB DDR2 vs Geforce GTX 680

Intro

The GeForce 8600 GT 512MB DDR2 comes with a GPU core speed of 540 MHz, and the 512 MB of DDR2 memory is set to run at 400 MHz through a 128-bit bus. It also is comprised of 32 Stream Processors, 16 TAUs, and 8 Raster Operation Units.

Compare all that to the Geforce GTX 680, which uses a 28 nm design. nVidia has clocked the core frequency at 1006 MHz. The GDDR5 memory runs at a frequency of 1502 MHz on this particular model. It features 1536 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
Geforce GTX 680 195 Watts
Difference: 148 Watts (315%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 680 will be 1402% quicker than the GeForce 8600 GT 512MB DDR2 overall, due to its greater data rate. (explain)

Geforce GTX 680 192256 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 179456 (1402%)

Texel Rate

The Geforce GTX 680 will be quite a bit (approximately 1390%) more effective at texture filtering than the GeForce 8600 GT 512MB DDR2. (explain)

Geforce GTX 680 128768 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 120128 (1390%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 680 is a better choice, by a large margin. (explain)

Geforce GTX 680 32192 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 27872 (645%)

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 GTX 680

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 GTX 680
Manufacturer nVidia nVidia
Year April 2007 March 2012
Code Name G84 GK104
Memory 512 MB 2048 MB
Core Speed 540 MHz 1006 MHz
Memory Speed 800 MHz 6008 MHz
Power (Max TDP) 47 watts 195 watts
Bandwidth 12800 MB/sec 192256 MB/sec
Texel Rate 8640 Mtexels/sec 128768 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 32192 Mpixels/sec
Unified Shaders 32 1536
Texture Mapping Units 16 128
Render Output Units 8 32
Bus Type DDR2 GDDR5
Bus Width 128-bit 256-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 4.2

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that can be processed in one second. This figure 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

Geforce GTX 680

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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