LinuxBSDos.com posted a review on Linux Mint 12 LXDE
Linux Mint LXDE is the edition of Linux Mint, a distribution based on Ubuntu Desktop, that uses the Lightweight X11 Desktop Environment (LXDE), which, as the name suggest, is very well suited for computers with low hardware resources. The latest release is Linux Mint 12 LXDE.Linux Mint 12 LXDE Review
If you currently use another edition of Linux Mint 12, like Linux Mint 12 KDE or Linux Mint 12 GNOME, you will find that there is very little difference, if any, in functionality between this LXDE edition and those other more popular editions, other than for some LXDE-specific applications.