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GeForce 8800 GT 512MB vs GeForce GTX 660

Intro

The GeForce 8800 GT 512MB comes with a GPU clock speed of 600 MHz, and the 512 MB of GDDR3 memory is set to run at 900 MHz through a 256-bit bus. It also is made up of 112 SPUs, 56 Texture Address Units, and 16 ROPs.

Compare all of that to the GeForce GTX 660, which has a clock speed of 980 MHz and a GDDR5 memory speed of 1502 MHz. It also uses a 192-bit bus, and makes use of a 28 nm design. It is comprised of 960 SPUs, 80 TAUs, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB 105 Watts
GeForce GTX 660 140 Watts
Difference: 35 Watts (33%)

Memory Bandwidth

Performance-wise, the GeForce GTX 660 should theoretically be quite a bit superior to the GeForce 8800 GT 512MB overall. (explain)

GeForce GTX 660 144192 MB/sec
GeForce 8800 GT 512MB 57600 MB/sec
Difference: 86592 (150%)

Texel Rate

The GeForce GTX 660 will be quite a bit (more or less 133%) more effective at texture filtering than the GeForce 8800 GT 512MB. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce 8800 GT 512MB 33600 Mtexels/sec
Difference: 44800 (133%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 660 is the winner, and very much so. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce 8800 GT 512MB 9600 Mpixels/sec
Difference: 13920 (145%)

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 8800 GT 512MB

Amazon.com

Check prices at:

GeForce GTX 660

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 8800 GT 512MB GeForce GTX 660
Manufacturer nVidia nVidia
Year Oct 2007 September 2012
Code Name G92 GK106
Memory 512 MB 2048 MB
Core Speed 600 MHz 980 MHz
Memory Speed 1800 MHz 6008 MHz
Power (Max TDP) 105 watts 140 watts
Bandwidth 57600 MB/sec 144192 MB/sec
Texel Rate 33600 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 112 960
Texture Mapping Units 56 80
Render Output Units 16 24
Bus Type GDDR3 GDDR5
Bus Width 256-bit 192-bit
Fab Process 65 nm 28 nm
Transistors 754 million 2540 million
Bus PCIe x16 2.0 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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 512MB

Amazon.com

Check prices at:

GeForce GTX 660

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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