Taurus2313's profile

Contributor

 • 

81 Messages

Thu, Mar 18, 2021 8:22 PM

Upgrading question

I am currently on the 200mbps plan with an Arris SB8200 modem and NetGear Nighthawk AX5400 (XR1000) router and I am looking to upgrade to the 1200mbps plan. Would this modem be compatible with the Xfinity 1200mbps plan? 

Responses

Accepted Solution

EG

Expert

 • 

87.1K Messages

3 m ago

That is theoretically true. You won't get the full 1000 Mbps or 1200 Mbps with your current modem because it only has a 1000 Mbps / gigabit ethernet port, so you would get a max of about 940 Mbps with it due to the ethernet overhead that is ever-present. Whereas, the CM2000 has a 2.5 Gbps port so theoretically you should get the full 1200 Mbps and possibly more due to their 20 percent speed over-provisioning.

It all depends on what you will be happy with. Spending even more money for a new device, or settling for what you already have.

(edited)

EG

Expert

 • 

87.1K Messages

3 m ago

Yes but your current Arris SB8200 modem already is DOCSIS 3.1 / gigabit speed compatible.

Taurus2313

Contributor

 • 

81 Messages

3 m ago

Yes I know but when I try to upgrade my plan online via Xfinity it tells me that it will not work with 1.2gbps as it only goes up to 1gbps.. I was wondering if I really needed to upgrade to another modem as this one is not that old. I think that I got it last year.. If I will not necessarily have to purchase another modem I would rather not but if you think that the one that I have now is compatible and will work then please advise. Thanks in advance.

(edited)

Visitor

 • 

1 Message

I can confirm that the SB8200 works with link aggregation for speeds of 1200+ Mbps. The compatibility page is incorrect. 

(edited)

Taurus2313

Contributor

 • 

81 Messages

3 m ago

Thanks for confirming! Awesome answer.. much appreciated!!

EG

Expert

 • 

87.1K Messages

3 m ago

My pleasure ! Good luck with your future choices !

New to the Community?

Start Here