Thanks for replying, according to the website, http://www.asus.com/Notebooks/Multimedia_Entertainment/N53SN/#specifications, my laptop can be ordered to have the cpu. When I bought my laptop it had the i5. I'm not sure if when someone orders if with the i7, they also get a better heat sink and power supply. Thats why I'm not sure if when I replace my i5 with the i7 I also have to replace my PCU and heat sink.