GeForce 8800 GT 512MB vs Geforce GTX 670

Intro

Compare that to the Geforce GTX 670, which has GPU clock speed of 915 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 256-bit bus. It also features 1344 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
Geforce GTX 670		170 Watts
	Difference: 65 Watts (62%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 is 233% faster than the GeForce 8800 GT 512MB overall, because of its greater bandwidth. (explain)

Geforce GTX 670		192000 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 134400 (233%)

Texel Rate

The Geforce GTX 670 is a lot (approximately 205%) better at anisotropic filtering than the GeForce 8800 GT 512MB. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 68880 (205%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 670 is superior to the GeForce 8800 GT 512MB, and very much so. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 19680 (205%)

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 information (counted in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.