> Stovi senukas Asus RT-N16, bet neturi 5 GHz, galvoju šitą pirkti, ar 
> verta? 
> http://www.skytech.lt/rtac66u-asus-rtac66u-dualband-wireless-80211acac1750-gigabit-router-p-130935.html#tabsnav-1 
> 
> Iš tiekėjo gaunu 300 mbps, o per 2,4 GHz belieka vos 20 mbps.

Kad lieka vos 20 mbps, tai nebutinai RT-N16 kaltas.
https://www.asus.com/us/Networking/RTN16/specifications/
WAN ir LAN - gigabitiniai portai, wifi 802.11n: up to 300 Mbps

Jei 5GHz - jie dengs dar maziau, tai su RT-AC66u klausimas
kiek per wifi ispestu daugiau, blogiausiu atveju - tiek kiek su RT-16N

https://www.asus.com/Networking/RTAC66U/specifications/
AC1750 superior AC performance : 450+1300 Mbps
802.11n : up to 450 Mbps
802.11ac : up to 1300 Mbps
MIMO technology
2.4 GHz 3 x 3
5 GHz 3 x 3

Pradziai pasidomek ir savo irenginiu galimybems paimt ta wifi.
Pvz. mano laptope sedi 802.11n, t.y. ji 5GHz kalba nesneka,
o galu gale ji matyt 1x1 korta, tai jai ir taip max 150mbps

https://community.acer.com/en/discussion/254304/specs-needed-for-qualcomm-atheros-ar956x-wireless-network-adapter-plz

https://forums.lenovo.com/t5/Lenovo-B-and-G-Series-Notebooks/Qualcomm-Atheros-AR956x-Wireless-Network-Adapter/td-p/2106499