[rincebrain]

Depends what you mean by "mobile".

The non-Atom chips usually have real Open GPU drivers that work the same as the desktop ones; the Atom chips [AFAIK] are the ones that primarily suffer from being PowerVR-licensed things with badly half-working "open" drivers.

[Narishma]

Not all Atom chips have PowerVR graphics, though AFAIK all the phone and tablet Atoms do.