Hi I currently own a 27 "iMac from late 2009, the first model with that design. I have looked much on a MacBook Air and would wait to buy one until it got Retina screen but now the new MacBook got there first so I wanted to hear what will be the fastest, my old iMac or new MacBook. I typically use my iMac to surf the web, check email, watch YouTube video, convert movies in HandBrake so no heavy things. My iMac has the following specifications: iMac (27 ", ultimo 2009) Screen: 27" 2560 x 1440 Hard Drive: 1TB SATA Processor: 3.06 GHz Intel Core 2 Duo Memory: 4GB 1067 MHz DDR3 Graphics: ATI Radeon HD 4670 256MB Against MacBook with the following specifications: MacBook 12" 2015 Screen: 12" 2304 x 1440 Hard Drive: 256GB PCIe-based onboard flash storage Processor: 1.1GHz dual-core Intel Core M processor Turbo Boost up to 2.4GHz Memory: 8GB 1600MHz LPDDR3 onboard memory Graphics: Intel HD Graphics 5300 Which will be faster for the things I have described? I do not know if the new MacBook will be able to do the things I do or if I should wait a year or two to see how the development of the other products go?