How I incredibly sped-up my mac mini 2011 with a Samsung ssd
2 - 4 Stunden
My HD 500 gb was too slow, I wanted to speed up my machine.
Everything was fine. The only problem was that the screws I found inside my mac mini were way more than the ones appearing in your video tutorial. I lost track of where each screw was supposed to be "re-screwed", ending up with a few spare ones (after remounting), that I did not know where to put.
I would definitely suggest annotating somehow where each screw comes from...