GeForce 8800 GTS (G80) 320MB vs Geforce GTX 680

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB		143 Watts
Geforce GTX 680		195 Watts
	Difference: 52 Watts (36%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 680 should be a lot faster than the GeForce 8800 GTS (G80) 320MB in general. (explain)

Geforce GTX 680		192256 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 128896 (203%)

Texel Rate

The Geforce GTX 680 should be a lot (more or less 423%) better at anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 104144 (423%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 680 is the winner, by a large margin. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 21932 (214%)

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 (in units of MB per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per 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 - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.