"It will be free for all owners of 600+ series graphics cards. It was supposed to be released alongside Nvidia Shield in late June 2013, but has been delayed. It was also later planned for release by the end of summer 2013, but the release was silently postponed. On the 20th of September, a Nvidia Forum Representative posted a thread to the Official GeForce Community Forums, Citing that the Delay was due to the Problems they had with Video Formats, and stating that they are planning to start "sharing this new feature with you soon.""
Will the mobile GPU's have it like the 650m?