Having owned Macbook Pro's since 2006 I have always wanted an SSD but space limitations vs price was always a problem. I finally bit the bullet and got one for my wife, sata 3 on her PC, and a Sata 6 on my MBP. I have 2011 I7 2.2 with 8 gb of ram. Boot time is now 12 seconds flat. Down from about 30 with my former Momentus XT. I'm running the Samsun 840 Pro series. Seems like a great drive. Very happy with the results.