Which sata III ssd for my laptop

Fran Wade

Honorable
May 7, 2013
28
0
10,530
Hi i bought a cheap dell inspirion 15 7559 laptop.
i have already replaced the crappy screen and now its a decent machine but I want a decent m.2 ssd for it. I have read that PCI ssd's wont work and it has to be sata III. Does anyone have any recommendations about a decent cheap ssd just mainly for operating system. I'm on a tight budget so I'm not reall after the samsung 850.
I also am not 100% on what key type I need as it gets a bit confusing.

Many Thanks