Fusion Driveis a system implemented by Apple in the new Macs presented in October, at launch the company offers the technology for only a few of its products. As of last night, Fusion Drive- can also be purchased together with iMacs that have 21.5 inch screens, these being the low-end, cheap models of the series. Only the 1 TB Fusion Drive can currently be purchased with these iMac models, with the 3 TB version still available for the 27.5-inch iMac.
