Hi there I was wondering if I could put a GTX 760 in my system that has a 460w PSU. My friend has an Alienware x51 that has only a 350w PSU and he has a GTX 760 with no problems. I went on PSU calculator and put in my exact specs (with the 760 included) and it said I would be okay. I was just wondering if Nvidia recommends a 500w PSU why is my friend okay with his Alienware and why did PSU calculator say I was fine? Anyone please respond thanks.