I tested with glxgears on an Eee PC 901 with GMA 950, INTEL_BATCH was enabled on both systems: Gutsy Gibbon: 950 FPS Intrepid Ibex: 500 FPS
I can confirm that the frame rate goes up in Intrepid Ibex (Gutsy Gibbon untested) when glxgears is behind another window or minimized.
I tested with glxgears on an Eee PC 901 with GMA 950, INTEL_BATCH was enabled on both systems:
Gutsy Gibbon: 950 FPS
Intrepid Ibex: 500 FPS
I can confirm that the frame rate goes up in Intrepid Ibex (Gutsy Gibbon untested) when glxgears is behind another window or minimized.