I wanted to upgrade my PC p6120in. I wanted to know if Gigabyte or Asus H81M-s1 or H81m-s are compatible with my PC. And also will PSU be a problem? I am having e5200 right now and i wanted to upgrade to i3 4150 with my new mobo. i3 4150 actually uses 54W whereas e5200 uses 65W. I will be upgrading RAM to 4x2 GB RAM. I dont think PSU will be a problem since RAM doesnt use much power and new CPU uses less power than the older one. Just wanted to confirm that.Also does Mobo uses Power?