GTX 650 Ti takes in 100w (being lenient, it actually takes in 85w). 100w/12V = 8.333A and VP450P can deliver this easily. Rest of the components also have plenty of power available to them.
As far as the rating goes, collectively both 12V rails can deliver 30A (360w/12V = 30A) like Jaskanwar told you. However OCP kicks in if the current in one rail goes above 18A.
Where is the problem? The card isn't even drawing 20A * 12V = 240w.
The reason why we have such lists is so that people buy a power supply enough to power other components. That said, that list is perhaps more suited for single rail PSUs.