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GeForce 8800 GT 512MB vs GeForce GTX 660

Intro

The GeForce 8800 GT 512MB features a GPU core 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 features 112 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Compare all of that to the GeForce GTX 660, which comes with GPU core speed of 980 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 192-bit bus. It also is made up of 960 SPUs, 80 TAUs, and 24 ROPs.

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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

The GeForce GTX 660, in theory, should be a lot faster than 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 (about 133%) better 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

The GeForce GTX 660 is quite a bit (approximately 145%) faster with regards to FSAA than the GeForce 8800 GT 512MB, and also should be able to handle higher resolutions more effectively. (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 max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability 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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