NETGEARNighthawk Cable Modem CM1200 - Compatible with all Cable Providers including Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 2 Gigabits | 4 x 1G Ethernet ports | DOCSIS 3.1, Black

A bit disappointing that it didn't come with a full manual (you have to download it), but otherwise it's a fine modem; easy to connect and set up. No notable performance improvements over the modem that Spectrum supplied me, but this one allows me to actually communicate with the modem, view incoming signal status, or change settings, which was why I ordered it. With the Spectrum modem you're pretty much blind: you can't view the status on your computer, and there are no meaningful status lights on the front of the modem. If you're having connection issues, it's nice to be able to tell your cable provider what your signal status is when you call for tech support.

Lo estoy usando para un ISP en Venezuela. Funcionó a la perfección

I bought this cable modem after some study and evaluation of popular cable modems for sale. I decided to buy it because I don't like the preset configuration of the Spectrum cable modem that comes with the Spectrum subscription. I prefer one that is not pre-configured and I'm glad I bought my own cable modem now that I have it.I went to the Spectrum website to find pre-approved modem models that are compatible with Spectrum equipment (you can do this with any cable company). I found that there are a lot of modems that are compatible, and I selected one based on the speed of my account and the price. I run about 300 MB/s speed, so I selected the Netgear Cable Modem model CM700 because it's rated for at least 400 MB/s and the price was very reasonable when compared to the competition.I was pleased with the CM700 right out of the box. It's much smaller than most other cable modems, and like most, it's mindlessly easy to hook up. It has a power plug that goes to a 110 volt AC outlet, a cable plug that goes to the cable outlet on the wall, and an ethernet plug that can plug into a PC, or a router/wireless router, or even into a network switch (gigabit switch).Once I took the CM700 out of the box, I looked at the quick-start guide, and I had the CM700 set up and running in less than a minute. I tested it, and it gives great speed too. The CM700 plugs into my wireless router (the uplink plug). It feeds the wireless router and a PC that is wired directly to one of the wireless router ethernet output plugs. The wireless speed I get from this set up is excellent, and the direct-connect speeds I get exceed my expectations. Look at the pictures, and you'll see from the quick-start guide how easy the CM700 sets up.The only criticism I have of the CM700 is that it seems to run warm, but then again, it has no malfunctions whatsoever. Also, I'm guessing that it has a great internal heat-sink, and I see that it has lots of holes for air ventilation, so that keeps it within the operating temperature range.Overall, I rate the CM700 a 5 star unit, based on both performance and price.

I have Cox Internet service in Southern California: "INTERNET ULTIMATE 300", which promises speeds up to 300 Mbps download, and 30 Mbps upload. I used Google web search with the phrase "internet speed test" to find several different speed test web pages. The top result was Google's own widget (using "M-Lab"). I also tried "speedtest.com" and the speed test page offered by Cox Communications. I used those three speed test sites, and many others. I tested in two different VirtualBox virtual machines: Windows XP SP3 and Ubuntu 17.10.1 (Linux). (I avoid web browsing directly in my host OS for most sites.) Because I did the tests in VMs, the speeds might be somewhat lower than if the tests were conducted in the host OS. The peak download speed I observed was 348 Mbps (~5:30 A.M. PDT, 40 miles to server), and the peak upload speed I observed was 35 Mbps (for many cities, up to 2,800 miles), with latency of 9-12 ms for servers within 40 miles. However, in late evening, download speeds within 40 miles were generally in the 160 to 200 Mbps range.I think it is crucial to recognize the dramatic effect of time of day and the day of the week, and also the distance to the server which is being used for the internet speed test. Some speed test sites enable the user to select servers in different cities, and I think it is important to repeat tests with different cities to see just how important distance (and, implicitly, network hops) is for download speed, upload speed, latency, and jitter.This modem enabled me to achieve download and upload speeds notably higher than the maximum speeds promised by Cox for my service tier (300 Mbps download, 30 Mbps upload). So, my ISP service tier is the limiting factor.I feel compelled to mention that a few isolated internet speed test runs performed relatively poorly -- like a single instance of a download speed of 60 Mbps (slow!), ten seconds after a result of 160 Mbps, and twenty seconds before a result of 194 Mbps. These isolated slow test runs are uncommon and random; and, so, it is important to repeat tests several times to make sure that incidental connection issues, which have nothing to do with the cable modem or "last-mile" ISP link, are recognized.I did many test runs from a Linux VM to a server within 40 miles, and all download speeds exceeded 319 Mbps, and routinely hit 346+ Mbps, around 5:30 A.M. local time, notably faster than the 300 Mbps promised by my ISP service tier.One final note: Although disconnecting my previous cable modem, and connecting the NETGEAR CM1000, was sufficient to access the Cox "cable modem activation" web page, their web page encountered an error, and I was forced to call Cox on the phone to complete activation (with modem serial number and MAC address). It took several "reset" commands from Cox before they detected the modem, and a couple of power cycles, all during the phone call, before it worked. Now, I am very pleased with the speed, and it is tempting to upgrade to Cox's Gigablast tier.

I bought this modem to replace the tm822g from comcast. My setup had the tm822g and an asus rt-ac66u, however, due to an issue with comcast I wont go into, I was being charged a rental fee for a modem that I had purchased. All of the other modems that were compatible with comcast did not offer the emta for voice so I was faced with either buying a modem and paying for a triple play that had voice i couldn't utilize. or pay 250 dollars for an arris that had emta but was based off the highly controversial intel puma6 chipset which has been documented as having flaws and being unstable. On top of that, all the devices that had emta were all in one gateway devices that provided routing and wireless which I did not want. I wanted a lean modem that literally only did modem and voice things. After some arguing with comcast they told me the cm500v was coming out in approximately 1 week and it would be what I am looking for.The CM500V has 16 downstream channels compared to the 8 channels on the tm822g. I do not notice any difference in top speed with this new modem as the bursts seem to cap at around 240mbps. It does seem though that when the modem is under load it seems to handle it better having more downstream channels to spread the bandwidth over. This modem does future proof a little as it would be adequate if comcast decides to up the speed to 686mbps at some point. Although, if that were to happen I would need to replace the AC66U because the CTF hardware acceleration on packet switching from the wan tops out around 300mbps.That all aside, I had no problem installing the modem. I plugged it in and it booted up and I was directed to the comcast walled garden. I put in my account information and it rebooted and was working within minutes. I did not have to call comcast. Once the modem was working I plugged it into my router and then I lost wan connectivity. Once I rebooted the router and the modem everything was up and running again. Since I was plugged directly into the modem from my laptop when it first booted up it got an IP address based on the MAC address of my laptop. That was why i lost connectivity when i plugged it into the router. Once I rebooted them both the modem pulled a new ip address and everything was good. The modem has been rock solid since with no issues on the phone or voice side.If you want a modem that is literally only an internet and voice modem that doesn't do any routing (because you have your own routing hardware) and doesn't have wifi (again because you have a router or an AP for that) than this modem is adequate and fits into a nice price point. It also is based off a broadcom chipset and is not susceptible to the issues people are reporting on devices that have been based off the faulty intel puma 6 chipset like the arris 6190. There has supposedly been promised a firmware update to fix the 6190 but it has yet to be seen. The arris 6183 is not affected by this issue in fact, the 6183 uses the same broadcom chipset the cm500v does. The key difference is that the cm500v has voice and the 6183 does not. The 6183 is one of the most popular retail modems and this devices is every bit its equal despite its slightly higher pricepoint, which as you may note, is because of the emta functionality the 6183 lacks.So if you need a reasonably priced 16x4 channel modem that doesn't have all the bells and whistles of the gateways the ISPs try to rent you and you dont have voice service from comcast, you can get an arris 6183 and save a few bucks.If you however have a triple play with voice, this modem is basically a 6183 with voice. If you check the datasheets its the exact same broadcom chipset.If you feel the need to check the webUI of this modem you will find its very simple and there isn't a lot you can do from there other than check the status and reboot the modem. The webUI is very lean on functionality. But honestly, I dont consider that an issue because as subscribers to an ISP we dont really handle any of the configuration anyway. The modem downloads the docsis config form the ISP when its provisioned so really that point is moot.