Phoronix har testet de mest gængse desktops og set hvorledes de yder i 3D-spil.
XFCE og GNOME-Shell er generelt de hurtigste.
Overall the results were interesting from the range of Linux OpenGL benchmarks conducted under Unity, Unity 2D, GNOME Shell, GNOME Classic, KDE Plasma, and Xfce on Ubuntu 12.04. There are some exceptions, but across the driver configurations the desktops to commonly perform the best were Xfce 4.8 and GNOME Shell 220.127.116.11. The default Unity desktop was a mix in terms of performance across the different OpenGL workloads. The outlier to these results though is the AMD Catalyst driver, which for the most part performed the same regardless of desktop environment / window manager.
Desværre kørte testen ikke med den nyeste Catalyst-driver. Catalyst 12.1 indeholder visual fixes og performance fixes til GNOME-Shell.