10 Best Comcast Modems
for December 2021

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1
9.9
SCORE
Motorola MB8600 DOCSIS 3.1 Cable Modem, 6 Gbps Max Speed. Approved for Comcast Xfinity Gigabit, Cox Gigablast, and More, Black

Motorola MB8600 DOCSIS 3.1 Cable Modem

6 Gbps Max Speed. Approved for Comcast Xfinity Gigabit, Cox Gigablast, and More, Black

by MTRLC LLC
What We like

A BROADCOM CHIPSET PROVIDES SECURITY FROM DENIAL OF SERVICE ATTACKS - a 10/100/1000 Gigabit Ethernet port allows connection of any SINGLE device with an Ethernet port including a router, Windows or Mac computer, HDTV, or game station.

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Product Features

  • WORKS WITH ANY WiFi ROUTER YOU LIKE - including Whole Home WiFi or Mesh routers like eero, Google WiFi, and Orbi. This cable modem does NOT have a built-in wireless router or telephone call capability.
  • ELIMINATE UP TO 156 DOLLARS PER YEAR IN CABLE MODEM RENTAL FEES. (Savings are shown for Comcast Xfinity and vary by cable service provider.) Approved by Comcast Xfinity and Xfinity X1, Cox, and CableOne for all speeds including Comcast Gigabit services and Cox Gigablast. Not compatible with RCN. No cable modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
  • ACTIVE QUEUE MANAGEMENT (AQM) SIGNIFICANTLY REDUCES INTERNET LATENCY - on both DOCSIS 3.1 and 3.0 services. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing. The MB8600 also includes a full-band capture digital tuner to enhance speed and save energy.
  • TOP INTERNET SPEEDS FOR ALL CABLE INTERNET SERVICES - Wirecutter recommends this as the best cable modem for people using Gigabit Internet plans. Built-in DOCSIS 3.1 and DOCSIS 3.0 32x8 capabilities give top Internet speeds for all cable Internet services, from the slowest to the fastest.

Active queue management (aqm) significantly reduces internet latency - on both docsis 3.1 and 3.0 services. aqm results in faster page loads for all web traffic and greatly enhances interactive applications like online gaming and video conferencing. the mb8600 also includes a full-band capture digital tuner to enhance speed and save energy. Top internet speeds for all cable internet services - wirecutter recommends this as the best cable modem for people using gigabit internet plans. built-in docsis 3.1 and docsis 3.0 32x8 capabilities give top internet speeds for all cable internet services, from the slowest to the fastest. Eliminate up to 156 dollars per year in cable modem rental fees. (savings are shown for comcast xfinity and vary by cable service provider.) approved by comcast xfinity and xfinity x1, cox, and cableone for all speeds including comcast gigabit services and cox gigablast. not compatible with rcn. no cable modem is compatible with fiber optic, dsl, or satellite services, available from verizon, at&t, centurylink, frontier, and others.) Works with any wifi router you like - including whole home wifi or mesh routers like eero, google wifi, and orbi. this cable modem does not have a built-in wireless router or telephone call capability.

2
9.5
SCORE
NETGEAR Cable Modem with Voice CM500V - For Xfinity by Comcast Internet & Voice | Supports Cable Plans Up to 300 Mbps | 2 Phone lines | DOCSIS 3.0 (Renewed)

NETGEAR Cable Modem with Voice CM500V - For Xfinity by Comcast Internet & Voice

Supports Cable Plans Up to 300 Mbps, 2 Phone lines, DOCSIS 3.0 (Renewed)

by Netgear Inc
What We like

VOICE PHONE SUPPORT: For use with Xfinity Voice service and up to 2 telephone lines with enhanced call features including caller ID, 3-way conference calling, call forwarding and more.

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Product Features

  • ETHERNET CONNECTIONS: 1 Gigabit Ethernet port connects to your computer or separate Wi-Fi router.
  • WORKS WITH ANY WiFi ROUTER: Connect any WiFi router to this modem's ethernet port to support all your wireless devices.
  • SAVE MONTHLY RENTAL FEES: Model CM500V replaces your cable modem saving you up to $150/yr in equipment rental fees.
  • BUILT FOR FAST SPEED: Best for cable provider plans up to 300 Mbps speed.
  • COMPATIBLE WITH XFINITY INTERNET & VOICE SERVICE: Certified by Comcast for Xfinity. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and non-Xfinity voice services.

Save monthly rental fees: model cm500v replaces your cable modem saving you up to $150/yr in equipment rental fees. Compatible with xfinity internet & voice service: certified by comcast for xfinity. not compatible with verizon, at&t, centurylink, dsl providers, directv, dish and non-xfinity voice services. Works with any wifi router: connect any wifi router to this modem's ethernet port to support all your wireless devices. Modem technology: engineered with 16x4 channel bonding and docsis 3.0. Ethernet connections: 1 gigabit ethernet port connects to your computer or separate wi-fi router. Built for fast speed: best for cable provider plans up to 300 mbps speed.

3
9.4
SCORE
NETGEAR Cable Modem CM700 - Compatible with All Cable Providers Including Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 500 Mbps | DOCSIS 3.0

NETGEAR Cable Modem CM700 - Compatible with All Cable Providers Including Xfinity by Comcast, Spectrum, Cox

For Cable Plans Up to 500 Mbps, DOCSIS 3.0

by Netgear Inc
What We like

Built for super-fast speed: best for cable provider plans up to 500 mbps speed.

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Product Features

  • Save monthly rental fees: Model CM700 replaces your cable modem saving you up to $168/year in equipment rental fees.
  • Works with any Wi-Fi router: Connect any Wi-Fi router to this modem's Ethernet port to support all your wireless devices.
  • Modem technology: Engineered with 32x8 channel bonding, OFDM 2x2, and DOCSIS 3.1.
  • Ethernet connections: 1 Gigabit Ethernet port connects to your computer or separate Wi-Fi router.
  • Compatible with all major cable internet providers: Including certification by Xfinity by Comcast, COX, and Spectrum. Not compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service.

Save monthly rental fees: model cm700 replaces your cable modem saving you up to $168/year in equipment rental fees. Compatible with all major cable internet providers: including certification by xfinity by comcast, cox, and spectrum. not compatible with verizon, at&t, centurylink, dsl providers, directv, dish and any bundled voice service. Works with any wi-fi router: connect any wi-fi router to this modem's ethernet port to support all your wireless devices. Modem technology: engineered with 32x8 channel bonding, ofdm 2x2, and docsis 3.1. Ethernet connections: 1 gigabit ethernet port connects to your computer or separate wi-fi router.

4
9.1
SCORE
NETGEAR N600 (8x4) WiFi DOCSIS 3.0 Cable Modem Router (C3700) Certified for Xfinity from Comcast, Spectrum, Cox, Spectrum & more

NETGEAR N600 (8x4) WiFi DOCSIS 3.0 Cable Modem Router (C3700) Certified for Xfinity from Comcast

Spectrum, Cox, Spectrum & more

by Netgear
What We like

Ideal for streaming HD videos, faster downloads, and high speed online gaming

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Product Features

  • Two in One DOCSIS 3.0 Cable Modem + WiFi Router with 2 Gigabit Ethernet ports and 1 USB 2.0 port.System Requirements Microsoft Windows 7, 8, Vista, XP, 2000, Mac OS, or other operating systems running a TCP/IP network. Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher
  • ELIMINATE MONTHLY CABLE MODEM RENTAL FEES Up to $120 per year
  • Required for the fastest cable Internet speed tiers.Use with an N300 adapter like NETGEAR WNA3100 for maximum performance
  • Up to 340Mbps modem speed and Dual Band N450 (2.4GHz & 5GHz) WiFi speed. 8x4 channel bonding, Denial of Service (DoS) attack prevention
  • Compatibe with Xfinity from Comcast, Spectrum, Cox, & more. Not compatible with bundled voice services..Wifi technology:802.11n Dual Band Gigabit

Compatibe with xfinity from comcast, spectrum, cox, & more. not compatible with bundled voice services..wifi technology:802.11n dual band gigabit Docsis 3.0 unleashes 8x faster download speeds than docsis 2.0 Required for the fastest cable internet speed tiers.use with an n300 adapter like Netgear wna3100 for maximum performance Up to 340mbps modem speed and dual band n450 (2.4ghz & 5ghz) wifi speed. 8x4 channel bonding, denial of service (dos) attack prevention Eliminate monthly cable modem rental fees up to $120 per year Two in one docsis 3.0 cable modem + wifi router with 2 gigabit ethernet ports and 1 usb 2.0 port.system requirements microsoft windows 7, 8, vista, xp, 2000, mac os, or other operating systems running a tcp/ip network. microsoft internet explorer 5.0, firefox 2.0, safari 1.4, or google chrome 11.0 browsers or higher

5
8.6
SCORE
NETGEAR Cable Modem CM600 - Compatible with Cable Providers Including Xfinity by Comcast, Spectrum, Cox | for Cable Plans Up to 400 Mbps | DOCSIS 3.0 | 24x8

NETGEAR Cable Modem CM600 - Compatible with Cable Providers Including Xfinity by Comcast, Spectrum, Cox

for Cable Plans Up to 400 Mbps, DOCSIS 3.0, 24x8

by Netgear Inc
What We like

Ideal for streaming 4K UHD content, fastest downloads, and high-speed online gaming

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Product Features

  • DOCSIS 3.0 Cable Modem with 1 Gigabit Ethernet port. DOCSIS 3.0 unleashes 8x faster download speeds than DOCSIS 2.0
  • Support Cable Internet Service plans up to 300Mbps. Recommended for all speed tiers up to 500 Mbps. Separate router required for WiFi. 24x8 channel bonding
  • Not compatible with: Verizon, AT&T, or CenturyLink
  • Compatible with Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision, and more. Requires Cable Internet Service
  • Cable Modem only (no WiFi router).Memory: 8 MB NOR flash and 128 MB RAM

Docsis 3.0 cable modem with 1 gigabit ethernet port. docsis 3.0 unleashes 8x faster download speeds than docsis 2.0 Compatible with comcast xfinity, time warner cable, charter, cox, cablevision, and more. requires cable internet service Support cable internet service plans up to 300mbps. recommended for all speed tiers up to 500 mbps. separate router required for wifi. 24x8 channel bonding Cable modem only (no wifi router).memory: 8 mb nor flash and 128 mb ram Not compatible with: verizon, at&t, or centurylink

6
8.5
SCORE
NETGEAR CM700 (32x8) DOCSIS 3.0 Gigabit Cable Modem. Max download speeds of 1.4Gbps. Certified for XFINITY by Comcast, Time Warner Cable, Charter & more (CM700) (Renewed)

NETGEAR CM700 (32x8) DOCSIS 3.0 Gigabit Cable Modem. Max download speeds of 1.4Gbps. Certified for XFINITY by Comcast

Time Warner Cable, Charter & more (CM700) (Renewed)

by Netgear Inc
What We like

System Requirements is microsoft windows 7, 8, 10, vista, xp, 2000, mac os, or other operating systems running a tcp/ip network. Microsoft internet explorer 5.0, firefox 2.0, safari 1.4, or google chrome 11.0 browsers or higher. Check your cable Internet service provider web site for data speed tier compatibility

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Product Features

  • DOCSIS 3.0 up to 32x faster download speeds than DOCSIS 2.0.Memory: 8 MB NOR flash and 128 MB RAM
  • Support Cable Internet Service plans up to 500 Mbps. Separate router required for WiFi. 32x8 channel bonding
  • Not compatible with: Verizon, AT&T, or CenturyLink. Not compatible with bundled voice services. IPv6 next generation Internet addressing support
  • ELIMINATE MONTHLY CABLE MODEM RENTAL FEES - Up to $120 per year. Compatible with Xfinity from Comcast, Spectrum, Cox, CableONE & more

Not compatible with: verizon, at&t, or centurylink. not compatible with bundled voice services. ipv6 next generation internet addressing support Eliminate monthly cable modem rental fees - up to $120 per year. compatible with xfinity from comcast, spectrum, cox, cableone & more Support cable internet service plans up to 500 mbps. separate router required for wifi. 32x8 channel bonding Docsis 3.0 up to 32x faster download speeds than docsis 2.0.memory: 8 mb nor flash and 128 mb ram

7
8
SCORE
NETGEAR C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router with N600 8x4 Download speeds for Xfinity from Comcast, Spectrum, Cox, Cablevision (Renewed)

NETGEAR C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router with N600 8x4 Download speeds for Xfinity from Comcast

Spectrum, Cox, Cablevision (Renewed)

by Netgear
What We like

Certified to work with Cable Internet Providers like XFINITY from Comcast, Time Warner Cable, Cox, Cablevision, Bright House Networks, & More (Not Compatible with Cable Bundled Voice Services).

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Product Features

  • 8x4 channel bonding with Gigabit Ethernet Ports for fast wired, connections USB port to wirelessly share your hard drive.
  • DOCSIS 3.0 cable modem unleashes 8x faster download speeds up to 340 Mbps faster, smoother WiFi, and works with all major cable Internet providers (Not Compatible with Cable Bundled Voice Services).
  • Double firewall protection (SPI and NAT firewall).
  • Product ia part of Amazon Renewed (Renewed)

Product ia part of amazon renewed (renewed) Docsis 3.0 cable modem unleashes 8x faster download speeds up to 340 mbps faster, smoother wifi, and works with all major cable internet providers (not compatible with cable bundled voice services). 8x4 channel bonding with gigabit ethernet ports for fast wired, connections usb port to wirelessly share your hard drive. Double firewall protection (spi and nat firewall).

8
7.2
SCORE
MOTOROLA 16x4 Cable Modem, Model MB7420, 686 Mbps DOCSIS 3.0, Certified by Comcast XFINITY, Charter Spectrum, Time Warner Cable, Cox, BrightHouse, and More

MOTOROLA 16x4 Cable Modem

Model MB7420, 686 Mbps DOCSIS 3.0, Certified by Comcast XFINITY, Charter Spectrum, Time Warner Cable, Cox, BrightHouse, and More

by MTRLC LLC
What We like

Setup is fast and easy with a few quick steps set out in a Quick Start guide. Experienced USA-based customer support specialists are there to help if you need them.

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Product Features

  • Cable modem's Ethernet port connects to a computer, HDTV, game station, or wireless router. (This Model MB7420 cable modem does NOT have a built-in wireless router and does NOT have a telephone adapter or phone jack. The Motorola MG7310, MG7315, MG7540 and MG7550 have a built-in wireless router.)
  • This 16x4 DOCSIS 3.0 cable modem provides speeds up to 686 Mbps, sixteen times faster than DOCSIS 2.0. A Full-Band Capture digital tuner ensures a faster, more reliable Internet.
  • Requires cable Internet service. Certified by Comcast XFINITY for residential speeds up to Extreme 300, by Comcast Business for speeds up to Deluxe 250, Time Warner Cable, Cox, Charter Spectrum, BrightHouse, and other leading cable service providers for modem ownership programs that typically save rental charges of $120 or more per year

Requires cable internet service. certified by comcast xfinity for residential speeds up to extreme 300, by comcast business for speeds up to deluxe 250, time warner cable, cox, charter spectrum, brighthouse, and other leading cable service providers for modem ownership programs that typically save rental charges of $120 or more per year This 16x4 docsis 3.0 cable modem provides speeds up to 686 mbps, sixteen times faster than docsis 2.0. a full-band capture digital tuner ensures a faster, more reliable internet. Cable modem's ethernet port connects to a computer, hdtv, game station, or wireless router. (this model mb7420 cable modem does not have a built-in wireless router and does not have a telephone adapter or phone jack. the motorola mg7310, mg7315, mg7540 and mg7550 have a built-in wireless router.)

9
7.2
SCORE
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 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)

by Netgear Inc
What We like

Compatible with Xfinity from Comcast, Cox, Mediacom Cable, and more.

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Product Features

  • 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.

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. Support all cable internet speed tiers, up to gigabit (1000 mbps) service. separate router required for wifi.

10
7.2
SCORE
TP-Link 16x4 AC1750 Wi-Fi Cable Modem Router | Gateway | 680Mbps DOCSIS 3.0 - Certified for Comcast XFINITY, Spectrum, Cox and More (Archer CR700)

TP-Link 16x4 AC1750 Wi-Fi Cable Modem Router

Gateway, 680Mbps DOCSIS 3.0 - Certified for Comcast XFINITY, Spectrum, Cox and More (Archer CR700)

by TP-LINK USA
What We like

Increased Wi-Fi range: six internal antennas and high-powered amplifiers Boost signal strength and reduce interference

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Product Features

  • Cable Modem router: item is cable Modem router and this will serve as both your cable Modem and Wi-Fi router
  • Faster speed: up to 1750Mbps Wi-Fi speeds with simultaneous 2. 4GHz (up to 450Mbps) and 5GHz (up to 1300Mbps) bands; Channel bonding of up to 16 downstream and 4 upstream channels, up to 680Mbps download speeds
  • Eliminate rental fee: eliminate your cable Modem monthly rental fee - up to $120 per year

Eliminate rental fee: eliminate your cable modem monthly rental fee - up to $120 per year Faster speed: up to 1750mbps wi-fi speeds with simultaneous 2. 4ghz (up to 450mbps) and 5ghz (up to 1300mbps) bands; channel bonding of up to 16 downstream and 4 upstream channels, up to 680mbps download speeds Cable modem router: item is cable modem router and this will serve as both your cable modem and wi-fi router

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