Netgear Nighthawk DOCSIS 3.1 High Speed Internet Cable Modem

A few weeks in and so far so good -- the setup was simple, my ISP process via Breezeline was flawless and the speeds have been fantastic and stable. Slight compliant was the modem comes bundled with a Cat5e cable which cannot support the speeds the modem is capable of when plugged into any router.

The unit works well. The challenge was to establish a connection with my Internet Service Provider. This requires that the ISP be informed of the change and the unit's MAC number. It should be made VERY CLEAR, perhaps on the title page of the Quick Start Guide, not at the end of the Guide as it currently written. It took me 3+ hours to troubleshoot and finally have the ISP and the CM3000 Cable Modem working. Wifi internet is finally restored to my home.

Decided to upgrade my old CM1100 used with Xfinity (300 gbps download / 30 gbps upload) with CM3000 to get the 1 gbps download and 100 gbps upload speed on my revised Xfinity Internet service. Installation of CM3000 was very easy. And activation of new modem with Xfinity was done quickly and was running with upgraded services with CM3000 in less than 30 min. I highly recommend CM3000 if you plan to have more than 1 gbps download/upload speed for your home/office. And you can save on montly renting fee by owning your own modem.

2 weeks in, it is solid with my internet service, 350 down 40 up consistently. I'm not seeing drops or hesitation with normal use: light streaming/gaming/meetings.

Everything works great, but to be honest I can't tell if it's any faster. I got this cable modem because the coverage ran out on my router, so I figured I may as well upgrade both. The connection was fairly easy, but I had to contact Xfinity. The instructions said I could do it online, but that turned out to not be the case. I was pleasantly surprised that the first person I talked at Xfinity knew what to do. The whole process took about an hour but would have been less had I just called Xfinity right away. I did have an issue with the TV picture after everything was up and running. I had the previous cable modem behind the TV, and it didn't affect the picture, however, I had to move this modem a few feet away. It sits on the floor about three feet below the TV and there's no interference.

Awesome speed and reliability! Far superior to the cable company provided modem it replaced. Lightning fast and works perfectly with my Orbi mesh system. Speeds consistently in excess of 1 GB with dozens of devices active simultaneously. Highest recommendation!

Xfinity recently did an upgrade on our internet connection. Our old modem did not fully support the upgrade. We purchased the next generation CM3000 to "future-proof" our connection to Xfinity. After a fifteen minute setup we immediately measured an upstream change from 5 Mbps to 120 Mbps. Our downstream change we measured being from 190 Mbps to 330 Mbps. Both measurements were made via ethernet connection to our router. It seems that the CM3000 is doing it's job appropriately. The weak link in our setup is the 6 year old router which is connected to the modem via a 1Gbps ethernet port and cat 6a cable. We were hoping to see 600 to 800 Mbps downstream speeds. It would be great if the modem firmware supported a rudimentary speed test so that it's performance could be more easily validated. Interesting data is available via the modem's web interface, but we don't understand what all the numbers mean.

Unfortunately I was made to upgrade by Xfinity to a new modem even though I had a perfectly fine docsis 3.1 modem not even 3 years old, to access the newly available "next gen" upload speeds. I began searching for a unit that was not some sort of atrocious combination modem/router/ap and came across this. Set up through Xfinity was painless and this modem is running like a champ for a few weeks now. I now have 6x the upload speed as I had before, which is quite nice. Would recommend to anyone in need of a modem certified for mid/high split, "next gen" speed, or whatever terminology your ISP chooses

The Netgear CM3000 modem solved a problem I had streaming 24 bit / 96 kHz hi res audio files where music would stop after a track or two and not advance to the next track. This problem was with the Netgear CM1200 which I bought in 2024. Not a bad router, Internet speed was decent, ~950 mpbs on my Xfinity 1100 speed plan and I could stream video files fine. But high res audio is different b/c the files are not cached. I figured the CM1200 was contributing to a data latency issue and packets were getting jumbled. The CM3000 was Xfinity recommended (which means they'll push firmware updates to it) so I bought it. It has a little smaller form factor than the CM1200 which is nice. Setup using the Xfinity phone app was a breeze. Solved my high res audio file latency issue immediately. I'm a happy camper.

I replaced my Netgear CM 500 with the Netgear CM 1000 as the 500 was very updated and could no longer get further updates. without changing my Wi-Fi at all, I went from 50 megs to 200! Everything runs smoothly… I'm thrilled (I was not thrilled with how difficult Xfinity made this to activate!)