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

Intro

Compare that to the GeForce 8800 GTS (G92), which uses a 65 nm design. nVidia has set the core frequency at 650 MHz. The GDDR3 memory is set to run at a speed of 970 MHz on this specific card. It features 128 SPUs as well as 64 Texture Address Units and 16 ROPs.

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

Performance-wise, the GeForce 8800 GTS (G80) 640MB should theoretically be a small bit superior to 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) should be much (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

If using high levels of AA is important to you, then the GeForce 8800 GTS (G92) is a better choice, but only just. (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 largest amount of data (counted in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount 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 outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.