I have a 2007 MacBook. Recently cleaned and upgraded it with a new fan and 250GB HD. Nice little investments to keep it going for a while. Unfortunately it's only good for administrative stuff now. Can't really do anything else on it i.e. audio and video work. Curious to know how much faster the new Thunderbolt MBP is compared to this old 2007 MB. What about graphics performance using apps like Photoshop or watching 1080p video? I can't watch 1080p video on this 2007 MB. Too slow. How much faster is a new iMac compared to a new MBP?