GeForce 8800 GTS (G92) vs Geforce GTX 680

Intro

Compare those specs to the Geforce GTX 680, which has a core clock frequency of 1006 MHz and a GDDR5 memory speed of 1502 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It features 1536 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
Geforce GTX 680		195 Watts
	Difference: 60 Watts (44%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 680 should be quite a bit faster than the GeForce 8800 GTS (G92) overall. (explain)

Geforce GTX 680		192256 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 130176 (210%)

Texel Rate

The Geforce GTX 680 is a lot (more or less 210%) better at texture filtering than the GeForce 8800 GTS (G92). (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 87168 (210%)

Pixel Rate

If running with high levels of AA is important to you, then the Geforce GTX 680 is a better choice, by far. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 21792 (210%)

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 information (in units of MB per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 potential to get to the max fill rate.