alright thanks guys
Just remember that the 560 Ti requires a 500w PSU and the PSU should be a Corsair, Antec, Seasonic, and XFX type brands. If you have a PSU that has 19 amp on the 12v rail.
If you have two 12v rails they should total up to 19amps or higher. If you are using a 450w PSU and the amps on the 12v rail is 19 or better then there would be enough power to run the 560 ti.