Sata ssd vs Nvme ssd

[Edward17]

i am planning to buy a ssd but i cant choose one between these two
samsung 850 evo 250gb sata iii
samsung 960 evo 250gb m.2
850 costs around 110$ and 960 costs around 145$ here in my country...

i will use that drive as os drive and some softwares such as matlab,eclipse and maybe one or two games.. i play bf1

and also does ssd get slower if ths space fills up quickly? cause bf1 sizes almost 70gb..with future dlcs it will probably aroung 80 gb...

should it be better to go with a 500gb instead of 250gb? the 850 500gb costs 190$..though i may extend my budget e bit but it will be comfortable if a 250gb is enough for my purpose..

thanks in advance

 

[JaredDM]

M.2 is certainly a faster port. So you'll certainly see a speed advantage there. It may not be a huge difference in real-world performance, but it will be nominally faster. If I had to choose, I'd probably opt for larger capacity over the marginal speed difference, but that's a personal preference I suppose.