Nforce 650,680,780i,790i less than 1 yr to catch up intel fsb
Intel P35,P45,X38,X48 less than 8 months to match processor intel fsb
AMD 690,770,780,790 more than 1 year to catch up with amd processor
Since AMD+ATI looks like NV wants to catch up with Intel to be King of the chipset. But finally doesn't make a good sell cause too high price of 780/790. Nowdays Intel keep debut new chipset like x58,p55,H55 while NV absent the Chipset business for a long time.
AMD still show their 890GX only to provide USB 3 and Sata 3.
NV should learn from AMD+ATI there is no need to be king of the hill because user doesn't always upgrade whenever new chipset comes
AND
not to compete the chipset business with someone who create processor and chipset.... 533,667,800,1066,1333,1600,1800 CMIIW