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NETGEAR - 32 x 8 DOCSIS 3.1 Cable Modem - Black

The CM1000 Ultra-High Speed Cable Modem, with speeds up to 1Gbps and DOCSIS 3.1 is 10X faster than DOCSIS 3.0 devices. It's backward compatible with DOCSIS 3.0 and ready for future service plan upgrades for XFINITY from Comcast & Cox. A Gigabit Ethernet port provides faster access and downloads.

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$179.99

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    NETGEAR - 32 x 8 DOCSIS 3.1 Cable Modem - Black - Larger Front
    NETGEAR - 32 x 8 DOCSIS 3.1 Cable Modem - Black
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    • $179.99
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    Overview

    What's Included


    • CM1000 Ultra-High Speed Cable Modem - DOCSIS 3.1 (CM1000)
    • Ethernet cable
    • Power adapter
    • Quick install guide

    Ratings & Reviews


    Overall Customer Rating:
    96% of customers would recommend this product to a friend (704 out of 738)

    Features


    Compatibility

    Compatible with XFINITY from Comcast. Call your internet service provider for additional compatibility information.

    Save on Fees

    Eliminate monthly cable modem rental fees - up to $120 per year.

    Higher Speeds

    Up to 1Gbps download speeds for streaming HD videos, faster downloads, and high-speed online gaming.

    Gigabit Ethernet Port

    Fastest wired speeds to connect your router or computer.

    2 in 1

    DOCSIS 3.1 Cable Modem + WiFi Router.

    Improved WiFi Connection

    Boosts speed, reliability, & range of WiFi connections.

    DOCSIS 3.1

    DOCSIS 3.1 allows you to support new DOCSIS 3.1 and Gigabit internet services.

    External Router Needed

    This devices requires an external router for WiFi capabilities. Recommended to pair with NETGEAR WiFi router.


    Customer rating

    Rating 4.7 out of 5 stars with 738 reviews

    95%
    would recommend to a friend

    Pros

    Cons

    • Rating: 5 out of 5 stars

      5.0 out of 5 starsHow to get the MOST speed from

      Posted
      bllackeagle
      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite Plus MemberElite Plus Member

      I don't do reviews often, but I want to help my geek friends save days of research and frustration that I went through to finally get the absolute most speed out of my Gigabit internet. There are some golden nuggets here that you need to know. When I first upgraded to the new gigabit here in Denver (from Xfinity), it was using their new Cable Modem/Router device (XB6-A), and I was only getting 500 Mbps download speed. It was also lagging in our house when several people were gaming, and others were downloading, or even accessing intensive web-pages. (lagging = pings were going up). Since upgrading to this Netgear CM1000, upgrading my cabling, and factory resetting my router, I'm now getting the most download throughput (~941 Mbps) and the lowest pings I've EVER seen! The connection is rock solid throughout the house. SHORT ANSWER: Get this Netgear CM, upgrade your ethernet cables to Cat 6 (or Cat 5E for short distances) and then Factory Reset your router to get the most speed. You still may need a new router to reach gigabit speeds. I'm getting the most download throughput (~941 Mbps) and the lowest pings I've EVER seen! I did lots of tests comparing this cable modem to the XB6-A that Xfinity provided. Here are some big things I learned: 1) Make sure your ethernet cables going from the cable modem to the router and from the router to your PC are CAT6 or at least CAT5E (for short distances). 2) Upgrading to this Netgear CM1000 Cable Modem LOWERED my ping/latency compared to the XB6-A that Xfinity provided. I just got a 5 MS Ping to the google server here in Denver! UNHEARD OF. Most of the time it's around 8-9ms with this new cable modem. I was getting 11-14 w/ the Xfinity modem. If you're a gamer, a lower ping matters! 3) The Xfinity XB6-A modem/router combo doesn't work too well when you have your own router also connected to it. Xfinity recommends you only use their device and disconnect your router. 4) Around 941 Mbps is the max download speed that modern gigabit routers/switches can do right now so don't be worried if you can't get above that. 5) Many routers can't handle gigabit download speeds, especially if you've enabled any of the features like QoS, Traffic Meter, Keyword block, etc. My Netgear Nighthawk (R7000) was only getting 400-500 Mbps (using speedtest) because I had enabled some of these features. Even when I disabled these features, the speed was still low. Doing a FACTORY reset fixed it, and now I'm getting 937 - 943 Mbps download speed!!! The reason these routers slow down when you enable extra features is that it disables CTF (cut through forwarding) and the router no longer uses it's faster processor. Some of the newer routers can still maintain max download speeds of 941 Mbps while also allowing you to use QoS and other features. 6) There's a great website called Small Net Builder that compared routers to see which could reach 941 Mbps download speed. I recommend you check that out if you need a new router. Keep in mind that this Netgear CM1000 is JUST a cable modem. It's not a router. So if you only have one device you want to wire into it, you're fine, but if you're going to have more devices, and wireless, then you'll need a router too. The Xfinity provided XB6-A is both a cable modem and a wireless router in one. I think it has some flaws that need to be worked out but appears to be a beefy piece of hardware. You can save yourself the $10/month rental by getting this Netgear CM1000. P.S. I do plan to upgrade my router so that I can still get 941 Mbps download speed while enabling QoS. With QoS, it will set aside a portion of your bandwidth (say 20%) for high priority traffic like gaming that needs low latency, and then it will limit all other connections (like large downloads) to the other 80% the connection. Keep in mind; if you enable this and run a speed test, it will appear lower just because it's now reserving part of your bandwidth for other devices/traffic in your home.

      I would recommend this to a friend

    • Rating: 4 out of 5 stars

      Buy this if you can utilize the 3.1 DOCSIS speed

      Posted
      CoolWhippy
      • Verified PurchaserVerified Purchase
      • My Best Buy® MemberMember

      Bought this for Comcast and it was very easy to setup. Just plug it in and follow the directions to activate it through Comcast's portal. Didn't have to talk to anyone from Comcast. I'm currently paying $70/month and I didn't want to pay the extra $10 rental fee. I sold my soul and locked in that price for 3 years. This modem and a good ac1900 router will pay for themselves after 1.8 years for me. The throughput on the modem is great, I'm getting the most out of my internet speed. I posted screen shots of a few speed tests. Since this is the only DOCSIS 3.1 modem on the market, at the time of writing this review, it is quite expensive. Luckily there was a promotion with VISA checkout and I had some rewards to use, this came down to a decent price. Because of the price, I wouldn't recommend this modem if you're internet speed isn't over 200-300mbs down. You may get incremental increases, but it wouldn't justify paying so much more for this modem compared to a good 3.0 DOCSIS modem.

      I would recommend this to a friend

    • Rating: 5 out of 5 stars

      NETGEAR CM1000 - Amazing Speed!

      Posted
      Nae2boss
      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      I had been using a Cisco modem with a TP-Link Archer C7 router for quite a few years, then decided to run some speed tests on it. They were good, and I was happy with the performance. However, saw there were some new modems out there, and maybe I could squeeze more speed out of one of those - if it wasn't better I'd return the new one and continue with what I had. Well, this Netgear is like a device out of Star Trek - it's heads, tails, and a mountain faster than the old Cisco I had. It wasn't cheap, but I'd buy it again in a second, and have recommended it to all my colleagues. I don't have any super-high-speed plan, but once I hooked this modem up and ran Speedtest, I was getting approximately 575 mbits/sec sustained downloads! Uploads weren't much different, but no one expects them to be. The key to satisfaction for me is download speed, and I couldn't be more satisfied with this modem. It looks nice, doesn't give me any problems with Xfinity - IT JUST WORKS AND WORKS FAST! I'd recommend this unit to anyone who wants to make their Internet work fly! Besides that, I no longer pay a rental fee for the modem - BONUS!!!

      I would recommend this to a friend

    • Rating: 5 out of 5 stars

      Speeds on Comcast better than what I pay for

      Posted
      BillG
      • Verified PurchaserVerified Purchase
      • My Best Buy® MemberMember

      I'm running Comcast and paying for speed of 250. This cable modem consistently pumping out speeds over 300 / 12 for past week. Had Comcast modem/router combo was "tuned" by Comcast tech 2 years ago. While speeds good, never could regularly get speeds over 200. Cable modem connected to Netgear Nighthawk AC5000 with Cat 6 cables. All devices (4 laptops, 4 Iphones, Desktop, Sony Streaming device, WD My Cloud Home (NAS), Yamaha AV receiver, HP printers, Projector, etc.) seem to work better. Amazon video, Netflix, and Hulu work without any issues. Speed on streaming video services seems to be capped about 24 on their end. Previously I had minor issues with speeds but not with this modem. Comcast was able to activate by just logging into their website. Printed instructions poor to fair. But once I was on the Comcast site, their system recognized my modem and service was quickly working. Previously used Cisco / Linksys and Comcast cable modems over the years. Very happy with this cable modem compared to others. Only complaint is the power cord plug. Like most equipment the connector so big it covers up multiple outlet sites. Will be purchasing another for child at college who is on Spectrum / Time Warner.

      I would recommend this to a friend

    • Rating: 5 out of 5 stars

      Easy Setup. Great performance.

      Posted
      AJB423
      • Verified PurchaserVerified Purchase
      • My Best Buy® MemberMember

      Purchased the NETGEAR - 32 X 8 DOCSIS 3.1 Cable Modem as a prelude to cutting the cord. This modem exceeds the requirements needed for the 300 Mb plan available in my area from Cox, while providing the capacity for upgrade should additional service be offered in the future. Speed tests are consistently pulling 360-390 Mbps download with 27-31 Mbps upload on the 300 Mb plan Cox offers. Streaming and gaming presents no issues with multiple devices utilizing the internet at the same time. For us, this is a definite improvement over the modem Cox provided. Testing before the swap showed similar speed tests, but displayed multiple instances of buffering and FPS drops while gaming if multiple devices were operating at the same time. Setup was a breeze with easy to follow instructions. Activation through Cox did require duplication of the Power On functions for the Modem and Router. I would suggest calling them for activation once you have gathered the necessary information from the Modem (Part Number, Serial Number, etc.) and have made the appropriate connections. Required information is well documented in the instructions. We are 3 months in with this purchase and are happy we made it.

      I would recommend this to a friend

    • Rating: 5 out of 5 stars

      No hassle install

      Posted
      James
      • Verified PurchaserVerified Purchase
      • My Best Buy® MemberMember

      To begin: I have not been a NetGear fan for a long time [I am an IT Tech for 34+ years. Yes; I started with DOS 2.0] I cut the cable TV 'cord' and upped my net speed from 25 Mbps to 300 Mbps ~1.5 months ago. My old [Arris] Motorola SURFboard SB6141 DOCSIS 3.0 was stuck at 25 Mbps [w/ a GB network throughout the house]. The cable provider tech support tried many times to push the latest firmware to no avail. I went through every connection point from the street through the house. I had the cable from the street box replaced. I was then ready to replace my ASUS RT-AC68R router. That is, until a net search found a long running conflict with Motorola's SB6141 firmware & cable providers system/tech support. I bought this modem as a last resort to obtain the 300 Mbps speed I was paying for... Magnificent!! This modem is easy to configure - Rapid, flawless registration & update to firmware by the cable provider. I never had to call tech support. Every step was on-line. There was an immediate improvement in download/upload speeds. An initial speed test with a single isolated PC received 50% above the 300 Mbps download speed. Upload went from 5.91 Mbps on the SB6141 to 30+ Mbps --- Living the life streaming on everything. Good Job, NetGear!

      I would recommend this to a friend

    • Rating: 5 out of 5 stars

      Netgear 3.1

      Posted
      jcspooner97
      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite MemberElite Member

      I have been dragging my feet for the last year after Comcast kept emailing me my modem was not compatible with speeds I was paying for. After doing a test I notice the modem I had was 4 years old and the fastest speeds I was getting was half of what I paid for. After doing research Comcast and Att plan on rolling out Fiber internet so to purchase a future proof modem made sense since I wont have to do this in 2 years after Comcast drags it feet rolling out fiber internet. Over all the set up was easy and what was nice is if you follow the directions that Netgear gives you don't have to wait on hold with Comcast. Set up too around 8 minutes and after 15 minutes for it to reboot computer I did a speed test and was blown away how fast it was and how outdated my modem was. Might cost a little extra upfront but if you in a area that might be rolling out 3.1 internet over the next 2 to 3 years it would make sense to spend the extra few dollars and future proof you system. Last time I checked to rent a modem router combo that is 3.0 was around 10 bucks. If you trade in your old modem and get 15 percent off this will pay for it self in less then 12 months.

      I would recommend this to a friend

    • Rating: 1 out of 5 stars

      Keeps losing synchronization with Comcast

      Posted
      DonR
      • Verified PurchaserVerified Purchase
      • My Best Buy® Elite Plus MemberElite Plus Member

      I received this item from Amazon, self activation with Comcast didn't go smoothly at all. Had to leave it installed for about 15 minutes before the modem was visible to comcast. I suspect there was a firmware update or some provisioning that happened. It worked great for two days, then I started losing synchronization with the ISP. Rebooted the system from the web administration page, still couldn't synchronize with the ISP. By physically unplugging it and plugging it back in, it connected and synchronized. The modem would work for a few hours and then lose synchronization. After about 3 loss of synchronization, I suspected it was a bad modem, I went to Best Buy and picked up another CM1000, activated with Comcast. After a few hours the same thing started to happen. I was frustrated enough to go back to best buy and pick up a CM600 and the CM600 has been working great with no issues. I did not have any issues with the cable line before upgrading to the CM1000, I had an Arris SB6190 and never had any synchronization issues, and the CM600 does not have any issues either, so I am sure it is something wrong with the modem. I called comcast while connected and they said the signals look fine on the line, I then called netgear support and they were not helpful at all. Also, I was on the latest firmware version.

      No, I would not recommend this to a friend




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