Hi there - I currently have this MacBook Pro: http://www.everymac.com/systems/app...66-aluminum-15-mid-2009-sd-unibody-specs.html I'm thinking of switching to a MacBook Air. My one concern is the processor. The Air I would get has 1.7GHz Dual-Core Intel Core i7, Turbo Boost up to 3.3GHz. The current MacBook Pro I have is 2.66 GHz. I am not at all knowledgeable about this, so sorry if this is stupid, but should I be concerned about that? Will it be significantly slower? Also, what does the "i7: and "Turbo Boost up to 3.3 GHz" mean? Will that make up for the 1.7GHz vs 2.66 that I currently have? Thanks so much!