I have a 2.3 Dual Intel Core i5 13" MacBook Pro early 2011. I often notice there is a delay in the audio; like the volume button feedback. And other times when audio is starting to play other things I'm doing are slightly delayed. I already understand that the onboard sound shares some of the processing power from the processor; as compared to dedicated sound with it's own processor, so this is acceptable to me with my low end MacBook Pro. Sometimes when working or loading web pages audio starts unexpectedly. So rather than avoiding audio maybe just hit the mute button to prevent any slight delays; from unexpected/surprise audio. What do you friendly folks think of using the mute button as a performance booster? Just a fun, distracting thought; love to hear what ya'll think.