GeForce 8800 GTS (G92) vs GeForce 8800 Ultra

Intro

Compare that to the GeForce 8800 Ultra, which makes use of a 90 nm design. nVidia has clocked the core frequency at 612 MHz. The GDDR3 RAM is set to run at a speed of 1080 MHz on this model. It features 128 SPUs along with 64 TAUs and 24 ROPs.

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

The GeForce 8800 Ultra should theoretically be a lot faster than the GeForce 8800 GTS (G92) overall. (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 little bit (approximately 6%) faster with regards to AF 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 is quite a bit (more or less 41%) more effective at FSAA than the GeForce 8800 GTS (G92), and also should be able to handle higher screen resolutions without losing too much performance. (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 maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.