Samsung laptops were always an exception & probably the reason why samsung exited laptop business as I assume it would not be profitable to provide such hardware when competitors were selling models with less capable hardware at same price.but my samsung laptop released 5 years ago was dual band capable (Intel advanced-n 6235 radio)
If you can fully utilize 100mbps connection with Dlink-DIR816 AC router with your laptop & PC then good for you.From what I have seen in places I lived & considering my usage,this much networking hardware is not enough.In any case HDD space & reliability is more of a concern for me even at 50mbps.Even at 100mbps I felt restricted so now trying online storage & transfer options.