Pc Version
The website mentions that the PC version runs HQ and 8xMSAA at 35-45fps on a GTX 780Ti at 1080p. (και σε Metro, Crysis, Tomb Raider εαν βαλεις x8MSAA χαλια θα τρεχουν)
Naturally, a single 780Ti is able to hit the 60fps sweet spot in its current form provided MSAA is lowered.
Next Gen Consoles version
Moreover, it is said that the PS4 version will run at 900p/30fps while the Xbox One version will run at 720p/30fps. What's also interesting is that the console versions of the game will meet the minimum graphics settings of the PC version. Gametech claimed that The Witcher 3 on consoles will look similar to The Witcher 2.