GeForce 8800 GTS (G80) 320MB vs GeForce GTX 560 Ti

Intro

Compare those specifications to the GeForce GTX 560 Ti, which features a GPU core clock speed of 822 MHz, and 1024 MB of GDDR5 memory running at 1002 MHz through a 256-bit bus. It also is made up of 384 SPUs, 64 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB		143 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 27 Watts (19%)

Memory Bandwidth

In theory, the GeForce GTX 560 Ti should be 102% faster than the GeForce 8800 GTS (G80) 320MB overall, due to its higher data rate. (explain)

GeForce GTX 560 Ti		128256 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 64896 (102%)

Texel Rate

The GeForce GTX 560 Ti will be a lot (about 114%) more effective at texture filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 27984 (114%)

Pixel Rate

The GeForce GTX 560 Ti should be quite a bit (more or less 156%) more effective at full screen anti-aliasing than the GeForce 8800 GTS (G80) 320MB, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 16044 (156%)

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 max amount of data (in units of megabytes per second) that can be transported over 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 RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.