So I'm just about too buy an iMac. Coming from owning (now selling) a rMBP 15" with a 256GB SSD, what am i too expect in terms of real world speeds and usage of the Fusion Drive. Has anyone had the same experience i'm about too have and give me some info. Additionally, has anyone made a Windows partition on the Fusion Drive and been able to give us any information as too speeds and such. I'm scared people... So scared... I love my SSD speed like nothing else on a computer.