The Atom has PowerVR graphics, even and especially the latest one.
I am less than enthusiast about it! On Windows, you will get barely working driver and on another OS, nothing ; just unaccelerated 2D VESA and consider yourself lucky if you can get display at native res, not be stuck in 1024x768.
http://www.anandtech.com/show/6529/busting-the-x86-power-myth-indepth-clover-trail-power-analysis
They get better battery life.