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GeForce 8800 GT 512MB vs GeForce GTX 660

Intro

The GeForce 8800 GT 512MB comes with a clock speed of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and uses a 65 nm design. It features 112 SPUs, 56 Texture Address Units, and 16 ROPs.

Compare all of that to the GeForce GTX 660, which features core clock speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 960 SPUs as well as 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

As far as performance goes, the GeForce GTX 660 should theoretically be a lot better 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 should be a lot (about 133%) more effective at anisotropic 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 a high screen resolution is important to you, then the GeForce GTX 660 is a better choice, 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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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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.

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