GeForce 8800 GTS (G92) vs GeForce 8800 Ultra

Intro

Compare that to the GeForce 8800 Ultra, which features a GPU core clock speed of 612 MHz, and 768 MB of GDDR3 memory running at 1080 MHz through a 384-bit bus. It also is comprised of 128 SPUs, 64 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 36 Watts (27%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 Ultra should in theory be much superior to the GeForce 8800 GTS (G92) in general. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 41600 (67%)

Texel Rate

The GeForce 8800 GTS (G92) is a small bit (more or less 6%) faster with regards to texture filtering than the GeForce 8800 Ultra. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
GeForce 8800 Ultra		39168 Mtexels/sec
	Difference: 2432 (6%)

Pixel Rate

The GeForce 8800 Ultra will be quite a bit (about 41%) better at AA than the GeForce 8800 GTS (G92), and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 4288 (41%)

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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the 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 video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.