So my 4 year old macbook has a logic board problem where it no longer detects the battery. The battery indicator just shows an "x". So basically it works fine but it has to be plugged in all the time. My question is: I've heard that if a Macbook does not have a battery in it and is just running off of AC power, it will cut the CPU speed in half in order to cut the power consumption. I want to see if this is true or not. I have ordered a new MBP but I was going to sell this computer for my friend for very cheap, but I need to make sure its not actually running at 1ghz, cause I'd feel bad about selling him something like that. The computer is perfect otherwise.