Bought to replace my HDD that was beginning to heat up much on my MacBook Intel Core 2 Duo, this SSD is stunning. I pushed this moment for fear of having to reinstall everything, but this is not a hard drive cloning (with free software designed for this purpose), roughly 2:30 to clone 120GB, swap the two hard disk, restart, and recovered as allowed, except that the openings of applications are significantly faster, everything is more fluid, and it's pretty impressive.
More hard drive noise, forcing, and less heat.
In short, that's good, plus it seems Crucial is the brand most suitable for mac.