What is GHz when it comes to processors?
GHz = Giga Hertz. 1 hertz = 1 cycle per second, giga = prefix for billion so 2.16 GHz = 2.16 Billion cycles per second which is essentially the number of instructions the cpu can execute per second. As far as the pricing goes… Apple is fond of pricing the black cased mac books for more money. Calling them special editions or what not.