I did a search here and on Google and I couldn't find the answer I was looking for (because I know someone is going to chide me for it). Anyway, I have a Late '11 MBP and it's using the Intel right now, but it's supposed to switch to AMD when a graphics program needs it? How does this work? I know I can go into the Energy settings and make it use the discreet, but I'm not understanding how this works. If I run WoW, will it switch? What is the threshold for it kick in? I'd almost prefer if it used descreet on AC and integrated on battery, but I haven't seen how to do this.