I mounted in an old laptop , the laptop has onley SATA II port.
The laptop now is booting in 20s, the programs opens fast, the internet browsing is fast. I made some tests in my desktop PC before I mounted in the laptop. The results are very interesting.
I uploaded the test on youtube, I tested on SATA II and SATA III.
SATA 2 263MB read / 164MB write https://www.youtube.com/watch?v=8GT-cPW1tAs
SATA 3 448MB read / 162MB write https://www.youtube.com/watch?v=7d10zzE1RIM