I use it on all of my hardware (except the smartphone)... That includes my server (Xeon, 64bit, nginx, mariadb, mongodb, postfix, ...), my pc at home (Core2, 64Bit, kde 4.7), the netbook (32bit, atom, kde 4.7), my file-server (atom, 64bit, samba)...
gentoo is the system of choice on every new hardware i bought or will buy...
