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

Intro

The GeForce 8800 GTS (G80) 640MB comes with a GPU core speed of 513 MHz, and the 640 MB of GDDR3 memory runs at 792 MHz through a 320-bit bus. It also features 96 SPUs, 48 TAUs, and 20 Raster Operation Units.

Compare that to the GeForce 8800 GTS (G92), which comes with a GPU core clock speed of 650 MHz, and 512 MB of GDDR3 RAM set to run at 970 MHz through a 256-bit bus. It also features 128 SPUs, 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

As far as performance goes, the GeForce 8800 GTS (G80) 640MB should in theory be a bit better than the GeForce 8800 GTS (G92) overall. (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 (more or less 69%) more effective at texture 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 a bit (about 1%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTS (G80) 640MB, and will be capable of handling higher resolutions more effectively. (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 max amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential 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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