Скомпилил я эту вашу убунту
$ sudo cat /etc/apt/apt-build.conf
build-dir = /var/cache/apt-build/build
repository-dir = /var/cache/apt-build/repository
Olevel = -O3
mtune = -march=native -mtune=native
options = " -march=native -mtune=native"
make_options = " -j5"
$ sudo apt-build world --force-yes
core i3
8Gb
9500GT
