[citation][nom]malmental[/nom]384 cuda cores is the same for a GTX 560Ti..[/citation]
Yes, but these are Kepler cores, not Fermi cores. Kepler cores are a lot slower than Fermi cores.
[citation][nom]jackt[/nom]mmm... the 630 is faster than the 640 ? there is an error in the chart ?[/citation]
The 630 is not faster than the 640... It is only faster than the first 640 (look, there are three). Still, it's not something that should happen and is hopefully a typo in the chart, but whatever.