GeForce 8800 GTS (G80) 320MB vs GeForce GTX 550 Ti

Intro

Compare those specs to the GeForce GTX 550 Ti, which has a GPU core clock speed of 900 MHz, and 1024 MB of GDDR5 memory set to run at 1026 MHz through a 192-bit bus. It also is comprised of 192 Stream Processors, 32 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti		116 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 27 Watts (23%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 550 Ti is 55% quicker than the GeForce 8800 GTS (G80) 320MB in general, due to its higher data rate. (explain)

GeForce GTX 550 Ti		98496 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 35136 (55%)

Texel Rate

The GeForce GTX 550 Ti should be a bit (more or less 17%) more effective at AF than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 4176 (17%)

Pixel Rate

The GeForce GTX 550 Ti will be quite a bit (more or less 111%) better at AA than the GeForce 8800 GTS (G80) 320MB, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 11340 (111%)

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 max amount of data (counted in megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 applied per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 ability to get to the max fill rate.