Skip to main content
Solved

XFINITY blame my modem to the slow speed on SBG8300

  • November 1, 2024
  • 4 replies
  • 62 views
C
The Many
Forum|alt.badge.img

I have a SBG8300-9D65 and I have agreement with Xfinity for 1Gbps, so I should expect at least 800Mbps but I’m getting less than 100Mbps.

This used to work well always over 650Mbps… suddenly I’m having this slow speed.

Xfinity tech came to my home and tested the cable from the outside connection box to the connector inside my home, he said it is good, up to 1.4Gbps…

My modem is on warranty until March 2025.

Should I request a RMA? or there is a tech support for troubleshooting?

Any firmware update that I could apply? and how?

 

 

 

Best answer by Netopia

Xfinity approved the SBG8300 for their Internet speed up to 800 Mbps.  You’ll need to replace it with a modem/router that is compatible with your 1 Gbps speed that’s on their list.

https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2024.09.18%20Full%20List%20of%20Compatible%20Devices.pdf

View original
Did this topic help you find an answer to your question?
This topic has been closed for comments

4 replies

N
Rockstar!
Forum|alt.badge.img+30
  • NetopiaRockstar!
  • Rockstar!
  • 271 replies
  • Answer
  • November 5, 2024

Xfinity approved the SBG8300 for their Internet speed up to 800 Mbps.  You’ll need to replace it with a modem/router that is compatible with your 1 Gbps speed that’s on their list.

https://assets.xfinity.com/assets/dotcom/projects/cix-4997_compatible-devices/2024.09.18%20Full%20List%20of%20Compatible%20Devices.pdf

Current Setup: Sonic Fiber > G54
plemans
Juggernaut
Forum|alt.badge.img+41
  • plemansJuggernaut
  • Juggernaut
  • 2219 replies
  • November 6, 2024

How are you testing the speeds? 

Have you checked to see if you’re connecting at gigabit speeds to the router versus 100mbps connection? 

Usually when I see speeds drop to “around 100mbps” thats one of the first things I check

Current setup: Netgear CM3000-->Netgear RBE973S-->2.5gig tp-link switch, Xfinity 2.4gig/350mbps
C
The Many
Forum|alt.badge.img
  • cguanesThe Many
  • Author
  • The Many
  • 1 reply
  • November 7, 2024

I’m totally aware my modem is not 1GB, I’m not expecting to see 900Mbps but I’m expecting to see 600Mbps to 800Mbps… and no less than 100Mbps.

Laptop is connected with wire and NIC 1G

plemans
Juggernaut
Forum|alt.badge.img+41
  • plemansJuggernaut
  • Juggernaut
  • 2219 replies
  • November 7, 2024

I get that its wired in and the laptop has a 1 gig port, but have you actually checked the laptop and/or router to see if its connecting at gigabit speeds? I’ve seen sketchy cables not connect at gigabit speeds

Current setup: Netgear CM3000-->Netgear RBE973S-->2.5gig tp-link switch, Xfinity 2.4gig/350mbps

Most helpful members this week

Terms & ConditionsCookie settings

Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings