Currently I have the 2013 27 iMac with a 1 TB 7200 RPM HDD. I can shell out $300 AUD for a Mercury On The Go Pro Thunderbolt enclosure for an SSD, or $50 for a (Mercury) USB 3 one. In terms of latency, and random read/writes, is there any substantial downside to using an SSD over USB 3.0? The sequential speeds aren't important to me. Also will boot camp on Windows 10 work fine as well over USB? Appreciate any input! EDIT: In fact, I could even just get this SATA to USB 3.0 cable: http://www.warehouse1.com.au/epages/shop.sf/?ObjectPath=/Shops/warehouse1/Products/USB3S2SAT3CB EDIT: 2 (Don't use warehouse1, they have the worst reviews I've ever seen in my life.) And avoid needing an enclosure at all.