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

Intro

Compare all of that to the GeForce 8800 GTS (G92), which comes with core clock speeds of 650 MHz on the GPU, and 970 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs as well as 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

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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

Theoretically speaking, the GeForce 8800 GTS (G80) 640MB should be a small 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 quite a bit (more or less 69%) better at 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

If using high levels of AA is important to you, then the GeForce 8800 GTS (G92) is a better choice, but it probably won't make a huge difference. (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

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.