Best Comcast Xfinity Cable Modems and Modem Router Combos

Comcast is the largest Cable ISP in the US and majority of their customers lease modem from Comcast. You have to shell out $11/month for modem lease fees and additional fees for your TV DVR Set top box. The average cost of renting a modem is $11 a month, or $132 a year. The average cost of buying a modem is around $70-100. You’ll be saving hundreds in fees, and will likely be getting speeds as well. 

To set it up, all you have to do is plug it in to your coaxial port, power it on, and then activate the modem over a web portal which takes less than 5 minutes. To get rid of your leased modem, all you need to do is call Comcast and tell them you want to return the modem to their nearest service center.

We have research best devices for your Comcast Internet, Voice and Triple play packages.  There are plenty of options to choose from but here we have listed best ones to make it easier for you to choose the right one.

Best Modems for Xfinity Comcast
Save up to
$ 0
Per year by Buying your own Cable modem

Best DOCSIS 3.1 Modems for Gigabit speeds

Comcast Xfinity has started rolling out DOCSIS 3.1 Gigabit services since 2016 and covers most of their footprint now. Being nation’s largest Cable ISP Xfinity Comcast publishes and updates map for its gigabit DOCSIS 3.1 deployments and upcoming areas. It recently launched gigabit Internet service based on DOCSIS 3.1 throughout Colorado, its Oregon/SW Washington region and the company’s suburban Kansas City, MO, and Olathe, KS, service areas. Since field trials in Philadelphia and Atlanta at the end of 2015, Comcast has deployed DOCSIS 3.1-based gigabit Internet service in several markets, including Detroit, San Francisco, Chicago, Nashville, Atlanta, Miami and many more. For list of cities check roll out map on the Xfinity Gigabit Website

ARRIS SB8200 MOTOROLA MB8600 NETGEAR CM1000
Amazon Link
Number of Ethernet Ports 2 4 1
ISPs supported Xfinity/Comcast/Cox/Mediacom Xfinity/Comcast/Cox Xfinity/Comcast/Cox/Mediacom
Downstream Frequency 108-1002 MHz 108-1002 MHz 108-1002MHz
Upstream Frequency 5-42 or 5-85 Switchable 5-42 or 5-85 Switchable 5-42 or 5-85 Switchable
Thermal Design
Size/Dimensions 5.1 x 1.8 x 5.2 inches 7.2 x 7.9 x 2.2 inches 5.4 x 5.9 x 8.8 inches
Spectrum Analyzer Web GUI Yes Yes* (depending on the FW version) Yes* (depending on the FW version)
Warranty 1 YR 2 YR 1 YR

Best DOCSIS 3.0 Cable Modems

Below are the best cable modems you can get for your blast/Extreme services. It is advisable to purchase a minimum of 16x4 bonding cable modem and preferred to go with 24x8 or 32x8 modems. Higher Channel bonded modems gives you more speed during peak hours and and better signal reliability.

SB6183 CM600 CM700
Amazon Link
DOCSIS 3.0 Bonding DOCSIS 3.0 16x4 DOCSIS 3.0 24x8 DOCSIS 3.0 32x8
Xfinity Up to 300 Mbps Package Up to 300 Mbps Package Up to 400 Mbps Package
Rating
DOCSIS 3.0 Chipset Broadcom BCM33843 Broadcom BCM3384 Intel Puma6MG
Wi-Fi
Xfinity Performance Packages
Xfinity Blast! 150/200/250
Xfinity Extreme 250 /300 Packages
Xfinity Extreme 400

Best Voice Cable Modem

If you have Comcast Xfinity Triple Play service package with voice, then you are forced to get a telephony eMTA voice modem irrespective if you want to use voice or not. These modems support both Voice and Internet function (without Wi-Fi). Currently only good option out in the market is CM500V which supports internet speeds up to 300 Mbps. This should work most people. 

Click below link to find the modem at best price

  • DOCSIS 3.0 16x4 Bonding

    CM500V Supports high-speed 16 downstream channels and 4 upstream channels. It can support upto 300 Mbps on Xfinity Voice + Internet Packages

  • Xfinity Voice Support

    It is the only 16×4 and highest bonding Modem-only option available in the retail market today

  • Save up to $132

    Save up to $120/year by purchasing CM500V and not paying $11 per month Xfinity rental charges

Best Cable Modem Router

If you Comcast high speed Internet packages > 200 Mbps and want a combo Cable Modem Router we highly recommend NETGEAR Nighthawk C7000 AC1900 Cable Modem RouterNETGEAR C7000 is fastest DOCSIS 3.0 + 802.11ac WI-Fi Modem Router available in the market. It combines 24 DOCSIS channels with AC1900 WI-Fi Speeds.

C7000 Technical Specifications:

  • DOCSIS 3.0 24 QAM Downstream and 8 QAM Upstream Channels
  • 4 Gigabit Ethernet Ports
  • DOCSIS 3.0 compatible
  • 1 USB 2.0 Port
  • AC1900 (600 Mbps @2.4GHz with 256 QAM support +1300 Mbps @5GHz 11ac)
  • Simultaneous Dual Band WiFi—Tx/Rx 3×3 (2.4GHz) + 3×3 (5GHz)
  • Beamforming+ For more reliable connections on 2.4 and 5GHz bands
  • Broadcom BCM3384 CPU
  • 128 MB NAND Flash
  • 256 MB DDR Memory
  • Physical Dimensions:9.66 x 8.31 x 1.7 in
  • Optimized Industrial design to increase internal air-flow
  • Approved most of the ISPs including Comcast Xfinity, Spectrum, Time Warner Cable, Bright House, Mediacom, Cox Cable, Suddenlink, RCN, Grande, CableOne, Optimum, etc

  • DOCSIS 3.0 24 x 8 Channel Bonding

    C7000 enables a unique combination of 24×8 DOCSIS 3.0 Channel Bonding and Nighthawk Wi-Fi

  • NETGEAR NightHawk Class Wi-Fi

    Best in class AC1900 Wi-FI performance for large homes and long range Wi-Fi Performance

  • XFINITY SELF-INSTALL

    Get Online on Xfinity without a call with Self-activation Feature

Best Voice Cable Modem Router

If you have Comcast Xfinity Triple Play service package with voice, then you are forced to get a telephony eMTA voice modem or eMTA Modem Router irrespective if you want to use voice or not. These modems support  Voice, Internet, and Wi-Fi Router function. Currently there are 2 options out in the market which supports internet speeds up to 400 Mbps. The models are

This should work most people with triple play packages and need all-in-one device with Wi-Fi Router. 

Click below link to find C7100V Wi-Fi modem router with voice at best price

  • DOCSIS 3.0 24x8 or 32x8 Bonding

    C7100V Supports high-speed 16 downstream channels and 4 upstream channels. It can support upto 300 Mbps on Xfinity Voice + Internet Packages. SVG2482AC supports 32×8 Bonding

  • Xfinity Voice Support

    It is the only 24×8 or 32×8 and highest bonding Modem-only option available in the retail market today to avoid paying rental fees

  • Save up to $132

    Save up to $120/year by purchasing CM500V and not paying $11 per month Xfinity rental charges

How to Self-Install Xfinity Internet

How to Self-Install Xfinity Internet/Voice

Xfinity: Fastest Internet Service in US