Just curious about the downsides to getting the fusion drive? Anything related to bootcamp, or splitting them up? I would be interested in having a blade SSD and a HD in there, but I don't like logical drives. I read you can't format using disk utility if you split up a fusion drive. Also, does the logical processing of the fusion drive take up CPU usage? Thanks for all the answers in advance. I have a 240gb OWC SSD, and currently an iMac with a 1TB drive inside. Considering returning for fusion, unless I can find a cheap way to use the OWC drive. Unfortunately, OWC doesn't have a dual HD kit yet, and there are no blade-to-SATA connectors that I know of.