Take a early look at Storyboard running on the beagleboard with Compact 7 and OpenGL ES acceleration.
The framerate test we are running is called GuiMark. It's handy little test for checking performance but a lot of the work is text alignment which isn't accelerated with OpenGL ES.
We are planning on releasing our OpenGL ES support for WinCE and Compact 7 in our next version 1.3, but if you are interested in early access via a beta just drop us a note.