It should be fine.
Regarding your CPU upgrade question... you have a socket 1156 motherboard because all 1st generation Core i3/i5/i7 CPUs are socket 1156. There are enthusiast level socket 1366 Core i7 CPUs though.
All 2nd gen Sandy Bridge and 3rd gen Ivy Bridge CPUs are socket 1155. And, no you cannot install a socket 1155 CPU into a socket 1156 motherboard. Your only option is to install a faster 1st gen Core i3/i5/i7 CPU. You must check with Gateway to find out what is the fastest CPU you can install on your particular motherboard.
thanks !!! alot!!! about that OC would that be fine to do ? and how?? I ask this because I just installed the hd 7970 on it and I used to have an nvidia gts 450 and I dont see much improvement on some games, like for example world of warcraft I get very low frames and even minecraft both of this games my wife plays alot.. I am worry its the computers cpu