even at "best performance" the speedstep is still kicking in. i know this for a fact because when running Ableton Live 5 (universal binary), i run a benchmark test in it that we at the ableton.com user forums use to compare performance of various mac and pc computers. When running the test on a 2x2ghz iMac Core Duo. it reports 29% CPU usage. on a 2x2ghz MacBook Pro it reports 40%. now, if i run xBench whilst running the ableton benchmark file, xBench kicks the cpu up enough to turn off the speedstep and Ableton Live runs at the 29% that it should. (dual 1.67ghz mac mini's run at 37%, still better performance than the MacBook with speedstep on) so yea, for us in the realtime professional audio community, this speedstep thing kinda blows. and so does the dumbing down of Energy Saver (i.e. we cannot turn it off.. there is no "highest" processor setting any longer) how oh how do i truley get my MacBook Pro to run at full processor speed. how can i turn off the stepping down of this Core Duo processor? anyone?