Hello , this is my 1st question here , last year i build a pc with i5 3570k clocked @ 4.0ghz , Gigabyte z77-UD5H , Corsair Vengeance dual channel Ram 8gb running at 1866 and XFX 550 pro PSU. I want to get the GTX 970 now cause i been running integraded graphics from the i5 for a year . Will my build run with this card or should i buy the previus card GTX 770 ?