I often have four to five windows open. One being Photoshop (but not doing anything intensive, just drawing), another probably being the finder (with multiple tabs open once Mavericks), one being a web browser with often as many as twenty tabs open, another being something like iTunes or iPhoto, and another being some game either paused or in the start menu, and another being Skype. Will a Macbook Air be able to handle this? What would be the max for this machine as far as multitasking? The fact that it only has two cores concerns me...