http://bugs.winehq.org/show_bug.cgi?id=24558
--- Comment #1 from Jeff Zaroyko jeffz@jeffz.name 2010-09-29 03:44:32 CDT --- Consider looking through the Ubuntu launchpad.net bug system for reports relating to Speedstep / PowerNow! scaling issues. At a glance, there are quite a few.
Since it's something which is managed by the operating system, the problem may not be specific to Wine.