how much Gbit/s do I need?

[Carlos84]

I bought a rbk852 but what if when the 6gbit/s are too much and I could save money with a lower system like rbk763? I don't know how much I need? 

[FURRYe38]

Where are you seeing this 6Gbs at? 

IF your looking at the spec sheet and seeing 6Gb for wifi, that is combine total connection rate for the 2.4 and 5Ghz radios is all. Actual connection rates will be different depending upon your client devices you connect. 

https://www.increasebroadbandspeed.co.uk/realistic-speeds-wi-fi-5-and-wi-fi-6
https://www.duckware.com/tech/wifi-in-the-us.html
https://support.google.com/fiber/answer/6250056#zippy=%2Cmobile-devices-wi-fi

[Carlos84]

I know Its the max But where i can find out How much i have to buy?

[FURRYe38]

Kind of depends on how many devices you have and what the size of your home is. Orbi is mostly based on how big your home is and how many devices. 

https://community.netgear.com/t5/Orbi/Find-Your-Orbi-With-the-NEW-Orbi-Product-Selector/m-p/1907267/...
https://www.netgear.com/orbi/default.aspx
https://www.netgear.com/orbi/wifi-systems.aspx
https://kb.netgear.com/000038220/What-are-the-hardware-specifications-of-the-available-Orbi-WiFi-Sys...
https://kb.netgear.com/31097/How-many-devices-can-my-Orbi-system-support

[Carlos84]

So i have to count all Clients together ?

[FURRYe38]

How many total devices do you have? wireless and wired? 

How big is your home in Square Feet? 

[Carlos84]

wireless about 30 and 10 wired. 2400 square feet. but I only need wifi in 1800. the rbk852 alone was ok for me but could be better

[FURRYe38]

A 7 series would work as well. Just one RBS would be needed for either model you decide on. 

[Carlos84]

what i don't understand is why i have to add everything up, my cell phone for example has a connection of 800mbit/s but my internet provider only has 250mbit. sorry for my English. 

[FURRYe38]

You don't need to. Just know that there is a connection rate that differs from the bandwidth that you get from the ISP. 

Not all devices support high connection rates and you don't have to have devcies that match what the ISP is giving you. The ISP speed is a bandwidth speed only. You may or may not use the entire speed all at once. Depends on what you have online and are doing with this devices thru the ISP that uses what devcies need to get what your looking for, i.e. streaming or general surfing or gaming. 

Overall, try something RBK752 or RBK852 and see how it goes for you. 

30 feet or more is recommended in between RBR and RBS🛰️ to begin with depending upon building materials when wirelessly connected.
https://kb.netgear.com/31029/Where-should-I-place-my-Orbi-satellite ‌‌🛰️