GeForce 8800 GTS (G92) vs GeForce GTX 580

Intro

Compare those specs to the GeForce GTX 580, which features core clock speeds of 772 MHz on the GPU, and 1002 MHz on the 1536 MB of GDDR5 RAM. It features 512 SPUs as well as 64 Texture Address Units and 48 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 GTX 580		244 Watts
	Difference: 109 Watts (81%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 should be much faster than the GeForce 8800 GTS (G92) in general. (explain)

GeForce GTX 580		192384 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 130304 (210%)

Texel Rate

The GeForce GTX 580 should be a little bit (more or less 19%) faster with regards to texture filtering than the GeForce 8800 GTS (G92). (explain)

GeForce GTX 580		49408 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 7808 (19%)

Pixel Rate

The GeForce GTX 580 is quite a bit (approximately 256%) better at full screen anti-aliasing than the GeForce 8800 GTS (G92), and also should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 26656 (256%)

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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units 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 maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends 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.