NETGEAR Ultra-High Speed Cable Modem DOCSIS® 3.1 for XFINITY® from Comcast, Spectrum® & Cox® (CM1000-100NAS)

I've been looking for a modem for a while and doing so much research. I am so happy I picked up this Netgear modem because it instantly gave me 4 times faster speeds than what I had. No more disconnected internet or hard installation. This is the best option ever! You saved my life and the gamers/podcasters in the house are finally happy!

I purchased the modem after getting an end-of-life warning for my previous NETGEAR modem -- and a nice discount. It was literally a drop-in replacement. Moved the cables over, gave Xfinity 15 minutes to provision it, and I was back online I'm getting about 150mb/s more on speedtests with the new modem than I was with the old one.

Extremely powerful. Easy to setup, except the additional task of calling Cox to allow it to be recognized, since their online verification of the modem didn't work. But that's not Netgear's fault. Overall I'm getting impressive speeds over 2Gbps to my wired desktop, & over 1Gbps to my phones & iPads.

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.

The modem works as claimed and meets all performance needs. I had a problem with it getting on line. I called the help line and determined that the problem was with the ISP. They had to do something on their end to get the ISP and the modem to communicate.

Upgraded to the Nighthawk CM3000 with Xfinity and the difference was immediate. Setup was quick, activation was easy, and I'm consistently seeing near-gigabit download speeds with noticeably improved upload performance. The connection has been rock solid and pairs perfectly with my mesh Wi-Fi system. Great performance and worth the upgrade.

Description: Replaced my Optimum Ubee cable modem with the Netgear CM1000v2. Have been paying for 300 Mbps speed but was only getting around 100 Mbps with the optimum modem. New modem has my speed back up over 300 Mbps. The modem switch was easy with optimum after finally connecting with a human technical support person.

Can't go wrong with this modem. Hooked up easy and worked right away. Seems to have good speed too.

I needed this quickly after a nearby lightning strike torched our good and reliable CM600 we've used for years with Xfinity. I figured I might as well upgrade, and the newer modem, which supports the latest DOCSIS standards and provides other changes, has given us a decent improvement most of the time. However, it's really finicky about cable power levels, and our Xfinity/Comcast service is often on the margin. Some days, the CM1000 will restart frequently due to a reliable enough, but not top-tier cable signal. Since our current max throughput from the provider is 400-500 Mbps, which the CM600 also supports, the upgrade hasn't gone as well as hoped. When the connection from Xfinity is stable, we get great throughput. Max out what we can get with the current ISP. However, when the connection status is just 'acceptable,' we may drop a lot, and the rest of the Family Unit doesn't care about an extra 100-200 Mbps if it's not connected at all. My recommendation is that if you are with Xfinity and have a plan in the 400 Mbps range, the CM600 is just fine and more reliable than the CM1000. For other ISPs, it may be a massive upgrade.

My cable company said they couldn't see it on line. It was a waste of time and money. I need to ship this back.