GeForce 8800 GTX vs GeForce 8800 Ultra

Intro

Compare all of that to the GeForce 8800 Ultra, which makes use of a 90 nm design. nVidia has set the core speed at 612 MHz. The GDDR3 memory runs at a frequency of 1080 MHz on this model. It features 128 SPUs as well as 64 TAUs and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTX		155 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 16 Watts (10%)

Memory Bandwidth

Performance-wise, the GeForce 8800 Ultra should theoretically be a bit better than the GeForce 8800 GTX in general. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 17280 (20%)

Texel Rate

The GeForce 8800 Ultra should be just a bit (about 6%) faster with regards to texture filtering than the GeForce 8800 GTX. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce 8800 GTX		36800 Mtexels/sec
	Difference: 2368 (6%)

Pixel Rate

The GeForce 8800 Ultra should be a little bit (approximately 6%) faster with regards to anti-aliasing than the GeForce 8800 GTX, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 888 (6%)

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 (measured in megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.