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NETGEAR DOCSIS 3.1 Gigabit Cable Modem. Max download speeds of 6.0 Gbps, For XFINITY by Comcast, Spectrum, and Cox. Compatible with Gig-Speed from Xfinity (CM1000)

4.4 out of 5 stars 1,363 ratings
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Amazon's Choice in Computer Networking Modems by NETGEAR

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  • Support all cable internet speed tiers, up to Gigabit (1000 Mbps) service. Separate router required for WiFi.
  • DOCSIS 3.1 up to 10X faster download speeds than DOCSIS 3.0. DOCSIS 3.1 is OFDM 2x2+ DOCSIS 3.0 32x8 channel bonding
  • ELIMINATE MONTHLY CABLE MODEM RENTAL FEES - Up to $120 per year;32 downstream and 8 upstream channels for DOCSIS 3.0 connection
  • Not compatible with: Verizon, AT&T, or CenturyLink. Not compatible with bundled voice services.
  • Compatible with Xfinity from Comcast, Cox, Mediacom Cable, and more.

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  • NETGEAR Nighthawk Smart Wi-Fi Router, R6700 - AC1750 Wireless Speed Up to 1750 Mbps | Up to 1500 Sq Ft Coverage & 25 Devices | 4 x 1G Ethernet and 1 x 3.0 USB Ports | Armor Security
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  • Amazon Basics RJ45 Cat-6 Ethernet Patch Internet Cable - 5 Feet (1.5 Meters)
Total price: $247.11
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NETGEAR DOCSIS 3.1 Gigabit Cable Modem. Max download speeds of 6.0 Gbps, For XFINITY by Comcast, Spectrum, and Cox. Compatible with Gig-Speed from Xfinity (CM1000)
NETGEAR Nighthawk 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 | Black
Motorola MB8611 DOCSIS 3.1 Cable Modem, 6 Gbps Max Speed. Approved for Comcast Xfinity Gigabit, Cox Gigablast, Spectrum, and More, Black (2.5 Gbps Ethernet Port)
ARRIS SURFboard SB8200 DOCSIS 3.1 Gigabit Cable Modem, Approved for Cox, Xfinity, Spectrum & others , White , Max Internet Speed Plan 2000 Mbps
ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem with 2.5 Gbps Ethernet Port, Approved for Cox, Xfinity, Spectrum & Others.
Motorola 24x8 Cable Modem, Model MB7621, DOCSIS 3.0. Approved by Comcast Xfinity, Cox, Charter Spectrum, Time Warner Cable, and More. Downloads 1,000 Mbps Maximum (No WiFi)
Customer Rating 4.4 out of 5 stars (1363) 4.4 out of 5 stars (25965) 4.6 out of 5 stars (6130) 4.5 out of 5 stars (20459) 4.6 out of 5 stars (228) 4.5 out of 5 stars (6933)
Price $162.37 $179.99 $169.99 $147.33 $199.99 $77.98
Shipping FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details
Sold By Amazon.com Amazon.com MTRLC LLC Amazon.com Amazon.com MTRLC LLC
Connectivity Technology ethernet Ethernet Ethernet Ethernet Wired
Item Dimensions 5.4 x 5.9 x 8.8 inches 6.1 x 3.4 x 10.3 inches 7.25 x 2.25 x 7.88 inches 5.13 x 1.7 x 5.25 inches 5.14 x 1.8 x 4.74 inches 7.25 x 2.25 x 7.88 inches
Item Weight 0.84 lbs 1.22 lbs 1.10 ounces 0.90 lbs 1.10 ounces

Product description

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. A Gigabit Ethernet port provides faster access and downloads. Plus, there are no monthly rental fees.

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Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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Reviewed in the United States on June 15, 2017
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5.0 out of 5 stars How to get the MOST speed from your Gigabit internet (I have Xfinity)
By One Happy Dude on June 15, 2017
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's 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! 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 because 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 1 device you want to wire into it, you're fine but if you want 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 personally 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 need 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 speedtest, it will appear lower simply because it's now reserving part of your bandwidth for other devices/traffic in your home.
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