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GeForce 8800 GTS (G80) 640MB vs GeForce 8800 GTS (G92)

Intro

The GeForce 8800 GTS (G80) 640MB uses a 90 nm design. nVidia has clocked the core speed at 513 MHz. The GDDR3 RAM is set to run at a speed of 792 MHz on this model. It features 96 SPUs as well as 48 TAUs and 20 ROPs.

Compare those specifications to the GeForce 8800 GTS (G92), which comes with GPU core speed of 650 MHz, and 512 MB of GDDR3 RAM running at 970 MHz through a 256-bit bus. It also is made up of 128 Stream Processors, 64 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92) 135 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 8 Watts (6%)

Memory Bandwidth

The GeForce 8800 GTS (G80) 640MB should theoretically perform just a bit faster than the GeForce 8800 GTS (G92) in general. (explain)

GeForce 8800 GTS (G80) 640MB 63360 MB/sec
GeForce 8800 GTS (G92) 62080 MB/sec
Difference: 1280 (2%)

Texel Rate

The GeForce 8800 GTS (G92) will be a lot (about 69%) faster with regards to anisotropic filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 16976 (69%)

Pixel Rate

The GeForce 8800 GTS (G92) is just a bit (about 1%) better at anti-aliasing than the GeForce 8800 GTS (G80) 640MB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce 8800 GTS (G92) 10400 Mpixels/sec
GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Difference: 140 (1%)

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 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce 8800 GTS (G92)

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 GTS (G80) 640MB GeForce 8800 GTS (G92)
Manufacturer nVidia nVidia
Year Nov 2006 (640) Dec 2007
Code Name G80 G92
Memory 640 MB 512 MB
Core Speed 513 MHz 650 MHz
Memory Speed 1584 MHz 1940 MHz
Power (Max TDP) 143 watts 135 watts
Bandwidth 63360 MB/sec 62080 MB/sec
Texel Rate 24624 Mtexels/sec 41600 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 10400 Mpixels/sec
Unified Shaders 96 128
Texture Mapping Units 48 64
Render Output Units 20 16
Bus Type GDDR3 GDDR3
Bus Width 320-bit 256-bit
Fab Process 90 nm 65 nm
Transistors 681 million 754 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated 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 drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

GeForce 8800 GTS (G92)

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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