I use gfxcardstatus to force discrete when plugged in and force integrated when on battery. i haven't tried any gaming on battery yet, but integrated works perfectly well for full-screen HD video and any other normal use.
I use gfxcardstatus to force discrete when plugged in and force integrated when on battery. i haven't tried any gaming on battery yet, but integrated works perfectly well for full-screen HD video and any other normal use.