I decided to change the original hard drive of my MacBook Pro 2011 for speed and capacity. Thanks to prior TimeMachine backup, I could reinstall everything on the new SSD as if I had not changed disk. Installation is extremely simple, you just need a suitable screwdriver and this occurs even without specific knowledge. I do not believe the speed that it gave my Mac! It starts at quarterback towers, research, the app launches, downloads everything runs at a speed that I can not imagine it. My friend has a MacBook Pro 2014 and I do not see much difference in a conventional use.
What to do if you want to extend the life of your MacBook Pro!