NVIDA 680 v 670

[pinhodecarlos]

If you see it in terms of energy efficiency (ratio 3dMark/TDP) you have:

GTX 670 is 3.1 % better than GTX 680
GTX 670 is 24.4 % better than GTX 690
GTX 670 is 45.6% better than GTX 590

For calculations I used data from Nvidia page, like TDP and 3DMark DirectX 11 results.

670>680>690>590

In terms of price I don't know.

I don't own any CUDA card capable but when I am looking to buy a CPU I usually look for the most energy efficient one. This means I need to know a ratio of work/power. For me it is not important to have the fastest card or CPU but instead the one that for the same amount of work it uses less energy. Finally I look at the price.

For example, I would buy two GTX 670 instead of one GTX 590.