While KVM may be very fast for Linux virtualization, one of
the areas where VMware and VirtualBox are superior is when it comes to
the ability to provide hardware-accelerated 2D/3D support to guest
virtual machines that ultimately is passed onto the host and its
graphics card / driver. In this benchmark is a look at the gaming
performance of Oracle's VM VirtualBox 4.1 when using their "Chromium"
driver to enable guest Linux OpenGL acceleration.