In the unity-control-center one is able to set it so that their computer suspends after 5 minutes of inactivity as well as 10 minutes, however the gnome-control-center only allows times equal to or above 15 minutes which is rather annoying because if you want to set it to something below 15 minutes like 5 minutes, you have to go into the dconf-editor and change it yourself. So I think that the gnome-control-center should also allow you to set it to 10 minutes and 5 minutes.
In the unity-control- center one is able to set it so that their computer suspends after 5 minutes of inactivity as well as 10 minutes, however the gnome-control- center only allows times equal to or above 15 minutes which is rather annoying because if you want to set it to something below 15 minutes like 5 minutes, you have to go into the dconf-editor and change it yourself. So I think that the gnome-control- center should also allow you to set it to 10 minutes and 5 minutes.
I am running Ubuntu GNOME 15.10 with GNOME 3.18.