Built-in, turned on, and happy! The operating system is loaded within a few seconds - a dream! No clatter, clatter and have to be careful, to be able to not throw around the notebook during the switched state. The data transfer rate I sadly can not say, because my laptop has only SATAII. But in my experience rather IOPS are responsible for the 'wow' factor. The Crucial feels faster, moreover, as the Samsung EVO 840, in more software was however settled for firmware updates and disk cloning. Since I do not need all that, I am happy to have saved a few euros. But you should make sure that the Crucial probably able to realize its potential until 256GB! Compared to the 120GB version it is probably better approximately by a factor of 1.2.
