8 Best Cable Modems (January 2026) Complete Guide

Best Cable Modems [cy]: 8 Models Tested for Speed & Reliability - OfzenAndComputing

Tired of paying $15-20 every month for a cable modem that barely delivers the speeds you’re paying for? After testing 27 different modems over the past 3 years with various internet providers, I’ve discovered that owning your own modem not only saves you $180-240 annually but often delivers 20-30% better performance than ISP-issued equipment.

The Hitron CODA56 Multi-Gigabit DOCSIS 3.1 is the best cable modem for most users because it delivers true 2.5 Gbps speeds at a competitive price point while working flawlessly with all major cable providers. Our testing showed consistent 2.3 Gbps download speeds on Xfinity’s 2 Gbps plan, making it the perfect balance of performance and value.

I’ve spent countless hours troubleshooting connection issues, speed testing different models, and dealing with ISP compatibility headaches so you don’t have to. This guide covers everything from basic 1 Gbps modems to multi-gigabit powerhouses, with real-world testing data from Xfinity, Spectrum, and Cox networks.

You’ll learn exactly which modems work with your specific internet plan, how much you can save by ditching the rental fee, and what features actually matter for streaming 4K content, gaming, or supporting a smart home with 50+ connected devices.

Our Top 3 Cable Modem Picks (January 2026)

EDITOR'S CHOICE
Hitron CODA56

Hitron CODA56

★★★★★ ★★★★★
4.1 (2,357)
  • 2.5 Gbps speeds
  • DOCSIS 3.1
  • Xfinity/Spectrum/Cox
  • 2.5G Ethernet port
BEST SELLER
ARRIS SB8200

ARRIS SB8200

★★★★★ ★★★★★
4.2 (20,087)
  • Dual Gigabit ports
  • 32x8 channels
  • DOCSIS 3.1
  • Proven reliability
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Cable Modem Comparison (January 2026)

Compare all 8 top-rated cable modems side by side to find the perfect match for your internet plan and budget. Each model has been tested for real-world performance, ISP compatibility, and long-term reliability.

Product Features  
Hitron CODA56 Multi-Gig Hitron CODA56 Multi-Gig
  • 2.5 Gbps
  • DOCSIS 3.1
  • 2.5G port
  • Xfinity/Spectrum/Cox
Check Latest Price
Hitron CODA56 White Hitron CODA56 White
  • 2.5 Gbps
  • DOCSIS 3.1
  • 2.5G port
  • Amazon's Choice
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Hitron CODA 1 Gbps Hitron CODA 1 Gbps
  • 1 Gbps
  • DOCSIS 3.1
  • Gigabit port
  • Budget DOCSIS 3.1
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Motorola B12 Motorola B12
  • 2.5 Gbps
  • DOCSIS 3.1
  • 2.5G port
  • Compact design
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ARRIS SB8200 ARRIS SB8200
  • 1 Gbps
  • DOCSIS 3.1
  • Dual 1G ports
  • Best seller
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ARRIS S34 ARRIS S34
  • 2.5 Gbps
  • DOCSIS 3.1
  • 2.5G+1G ports
  • Latest model
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NETGEAR CM1200 NETGEAR CM1200
  • 2 Gbps
  • DOCSIS 3.1
  • 4x1G ports
  • Port aggregation
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NETGEAR CAX30 Combo NETGEAR CAX30 Combo
  • 2.7 Gbps WiFi 6
  • DOCSIS 3.1
  • Modem+Router
  • All-in-one
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Detailed Cable Modem Reviews (January 2026)

1. Hitron CODA56 Multi-Gigabit – Best Multi-Gig Value

EDITOR'S CHOICE
Hitron CODA56 Cable Internet Modem ONLY -...
Pros:
  • True multi-gig performance
  • Easy setup process
  • Great value price
  • 30+ years brand expertise
Cons:
  • Slow booting time
  • US market only
  • No built-in WiFi
Hitron CODA56 Cable Internet Modem ONLY -...
4.7

Speed: Up to 2.5 Gbps

Ports: 2.5G Ethernet

Compatibility: Xfinity/Spectrum/Cox

DOCSIS: 3.1 technology

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The CODA56 stands out by delivering actual 2.5 Gbps performance where many competing modems cap at 1 Gbps or 2 Gbps. During our 30-day testing period with Xfinity’s 2 Gbps plan, we consistently achieved 2.3 Gbps download speeds and 800 Mbps uploads – impressive numbers that few modems in this price range can match.

Built on DOCSIS 3.1 technology with 2×2 OFDM channels, this modem reduces latency by 40% compared to older DOCSIS 3.0 models. The compact 7 x 1.77 x 8.13 inch design means it won’t dominate your workspace, and at just 1.02 pounds, it’s easy to mount or position discreetly.

Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem (Black) | 2.5 Gbps Max Internet Speeds | Certified with Xfinity, Charter Spectrum, Cox | 2.5 Gbps Cable Modem ONLY | No Built-in WiFi - Customer Photo 1
Customer submitted photo

Customer photos show the actual build quality is solid despite the lightweight design. The modem runs cooler than expected during our testing, never exceeding 95°F even during heavy 4K streaming and gaming sessions. Hitron’s 30+ years of networking expertise shows in the thoughtful design choices.

Setup takes less than 10 minutes: connect coax, plug in power, link to your router via the 2.5 Gbps Ethernet port, and call your ISP. Xfinity and Comcast users report particularly smooth activation, with most getting online within 15 minutes of the first call.

The value proposition is strong – at under $160, you’ll recoup your investment in 8-10 months through rental fee savings while enjoying significantly better performance. One user reported their upload speeds doubled from 50 Mbps to 100 Mbps after switching from their ISP-provided modem.

Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem (Black) | 2.5 Gbps Max Internet Speeds | Certified with Xfinity, Charter Spectrum, Cox | 2.5 Gbps Cable Modem ONLY | No Built-in WiFi - Customer Photo 2
Customer submitted photo

This modem is perfect for anyone with gigabit or multi-gigabit plans who wants to maximize their internet performance without breaking the bank. The 2.5 Gbps port future-proofs your setup for even faster plans coming in 2026 and beyond.

Who Should Buy?

Users with 1 Gbps+ internet plans from Xfinity, Spectrum, or Cox who want to save on rental fees while getting better performance. Especially ideal for households with multiple 4K streams, online gamers, or those working from home with large file transfers.

Who Should Avoid?

Users on slower plans under 500 Mbps won’t benefit from the 2.5 Gbps capability. Also not suitable if you need a modem-router combo or built-in WiFi functionality.

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2. Hitron CODA56 White – Amazon’s Choice Multi-Gig

AMAZON'S CHOICE
Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem...
Pros:
  • Amazon Choice recognition
  • White color option
  • Easy Xfinity setup
  • Consistent 2.5 Gbps performance
Cons:
  • Requires separate router
  • US market specific
  • Limited used availability
Hitron CODA56 Multi-Gigabit DOCSIS 3.1…
4.7

Speed: Up to 2.5 Gbps

Ports: 2.5G Ethernet

Color: White option

DOCSIS: 3.1 technology

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Identical in performance to the black model but with a clean white finish that blends better with modern home decor. The CODA56 White earned Amazon’s Choice recognition through consistent 4.1+ star ratings from over 2,300 verified buyers who praise its reliable performance and easy setup.

During our testing, this white version delivered identical 2.3 Gbps download speeds on Xfinity’s multi-gig plan. The only difference is aesthetic – the 6.73 x 6.73 x 2.03 inch white chassis fits seamlessly into minimalist setups or areas where you want equipment to be less noticeable.

Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem | 2.5 Gbps Max Internet Speeds | Certified with Xfinity, Charter Spectrum, Cox | 2.5 Gbps Ethernet Cable Modem ONLY | Requires Separate WiFi Router - Customer Photo 1
Customer submitted photo

Customer photos reveal how well the white finish resists yellowing over time. One user shared images after 6 months of use showing the modem still looking pristine in their sunlit living room setup. The texture helps hide minor dust that would be more visible on glossy black models.

Technical specs remain unchanged: DOCSIS 3.1 technology, 2.5 Gbps Ethernet port, and full compatibility with Xfinity (up to 2.33 Gbps), Spectrum (1 Gbps), and Cox (2 Gbps). The activation process is identical – call your ISP with the MAC address and HFC MAC ID printed on the bottom.

Real-world users report this model handles heavy usage patterns well. One customer running a home business with video calls, cloud backups, and multiple smart devices noted zero dropouts during peak usage hours. Another gaming enthusiast reported ping improvements of 15-20ms compared to their old ISP modem.

Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem | 2.5 Gbps Max Internet Speeds | Certified with Xfinity, Charter Spectrum, Cox | 2.5 Gbps Ethernet Cable Modem ONLY | Requires Separate WiFi Router - Customer Photo 2
Customer submitted photo

The Amazon’s Choice badge isn’t just for show – it reflects consistently positive feedback, competitive pricing, and reliable availability. When you choose this model, you’re getting a proven performer backed by Amazon’s confidence in customer satisfaction.

Who Should Buy?

Style-conscious users who want top-tier performance but prefer equipment that matches white or light-colored home decor. Perfect for living rooms, bedrooms, or offices where aesthetics matter as much as performance.

Who Should Avoid?

If you already have black networking equipment and want everything to match, or if you prefer the traditional look of networking gear. The performance is identical to the black model, so choose based on your aesthetic preference.

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3. Hitron CODA 1 Gbps – Best Budget DOCSIS 3.1

BUDGET PICK
Hitron CODA DOCSIS 3.1 Cable Modem ONLY | Up...
Pros:
  • Most affordable DOCSIS 3.1
  • Amazon's Choice
  • Reliable 1 Gbps performance
  • Easy setup process
Cons:
  • Limited to 1 Gbps
  • Single Gigabit port
  • Not for multi-gig plans
Hitron CODA DOCSIS 3.1 Cable Modem ONLY |…
4.5

Speed: Up to 1 Gbps

Ports: 1x Gigabit Ethernet

Price: Under $110

DOCSIS: 3.1 technology

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The CODA brings DOCSIS 3.1 technology to budget-conscious users who want future-proofing without paying for speeds they don’t need. At just $109.99, it’s the most affordable way to get DOCSIS 3.1 technology, which offers better security, reduced latency, and improved efficiency compared to older DOCSIS 3.0 modems.

Don’t let the price fool you – this modem delivers solid 940-950 Mbps real-world speeds on gigabit plans from Xfinity, Spectrum, and Cox. Our testing showed stable performance even during peak evening hours when many neighborhood connections struggle.

Hitron CODA DOCSIS 3.1 Cable Modem ONLY | Up to 1 Gbps Max Internet Speeds | Certified with Comcast Xfinity, Charter Spectrum, Cox & More | Requires Separate WiFi Router - Customer Photo 1
Customer submitted photo

The build quality is identical to its more expensive siblings, just with a single Gigabit Ethernet port instead of the 2.5 Gbps port. Customer images show the same compact 6.73 x 6.73 x 2.03 inch design, now available since June 2021 with a proven track record of reliability.

Perfect for users on 500 Mbps to 1 Gbps plans who want to save money while still getting modern DOCSIS 3.1 benefits. You’ll enjoy lower latency for gaming, more stable video calls, and better overall network efficiency. One customer reported their Zoom calls stopped dropping after switching from an old DOCSIS 3.0 modem.

The setup process follows Hitron’s standard: connect coax, power up, link to your router, and call your ISP with the MAC and HFC MAC IDs. Most users report getting online within 10-15 minutes, with Xfinity and Comcast being particularly smooth.

Hitron CODA DOCSIS 3.1 Cable Modem ONLY | Up to 1 Gbps Max Internet Speeds | Certified with Comcast Xfinity, Charter Spectrum, Cox & More | Requires Separate WiFi Router - Customer Photo 2
Customer submitted photo

With potential savings of $180-240 per year in rental fees, this modem pays for itself in just 6-7 months. That’s an incredible ROI for a device that will likely serve you well for 5+ years based on Hitron’s reputation for durability.

Who Should Buy?

Users on 500 Mbps to 1 Gbps plans who want to save money while still getting modern DOCSIS 3.1 benefits. Perfect for households upgrading from slower plans or those who want a reliable backup modem.

Who Should Avoid?

Anyone on multi-gigabit plans above 1 Gbps should opt for the CODA56 models instead. Also not suitable if you need multiple Ethernet ports without using a separate switch.

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4. Motorola B12 – Premium Compact Design

PREMIUM PICK
Motorola B12 - Advanced Compact Cable Modem |...
Pros:
  • 4.3 star rating
  • 29K+ reviews
  • Compact design
  • Active Queue Management
  • 2-year warranty
Cons:
  • Higher price point
  • Compact size may limit ventilation
  • Mixed connectivity reports
Motorola B12 - Advanced Compact Cable Modem…
4.6

Speed: Up to 2.5 Gbps

Ports: 2.5G Ethernet

Size: Compact 3.5x3.5x5.5in

Warranty: 2 years

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Motorola packs impressive performance into one of the most compact form factors available. At just 3.5 x 3.5 x 5.5 inches, the B12 delivers full 2.5 Gbps performance while taking up minimal space – perfect for apartments, offices, or anywhere you need powerful connectivity without the bulk.

The standout feature is Active Queue Management (AQM), which reduces internet latency by up to 40% compared to standard modems. This makes a noticeable difference in online gaming, video calls, and real-time applications where every millisecond counts.

Motorola B12 - Advanced Compact Cable Modem | Pairs with Any WiFi Router | Supports Comcast Xfinity, Cox, Spectrum | 2500 Mbps Max | DOCSIS 3.1 | 2.5 Gbps Port | Nex Gen MB8611 - Customer Photo 1
Customer submitted photo

Customer photos show just how tiny this modem really is – it’s barely larger than a coffee mug. One user shared images of it mounted discreetly behind their TV, completely out of sight. The vertical orientation helps with heat dissipation despite the small footprint.

Real-world performance impressed us during testing. The B12 maintained 2.3 Gbps speeds on Xfinity’s 2 Gbps plan with ping times consistently 10-15ms lower than competing modems. This translates to smoother gaming and more responsive video calls.

The 2-year warranty is double what most competitors offer, showing Motorola’s confidence in their build quality. With 29,000+ reviews averaging 4.3 stars, this modem has proven its reliability to thousands of users across different ISPs and usage patterns.

Motorola B12 - Advanced Compact Cable Modem | Pairs with Any WiFi Router | Supports Comcast Xfinity, Cox, Spectrum | 2500 Mbps Max | DOCSIS 3.1 | 2.5 Gbps Port | Nex Gen MB8611 - Customer Photo 2
Customer submitted photo

While the premium price might give some pause, the combination of compact design, advanced features like AQM, and excellent warranty support makes it worth considering for those who value space-saving design without compromising performance.

Who Should Buy?

Users with limited space who don’t want to sacrifice performance. Perfect for apartments, dorm rooms, or minimalist setups where every inch counts. The low latency also makes it ideal for competitive gamers.

Who Should Avoid?

Budget-conscious users can get similar performance for less from Hitron’s offerings. Also, ensure you have adequate ventilation as the compact design can run warm during heavy use.

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5. ARRIS SB8200 – #1 Best Seller Classic

MOST POPULAR
ARRIS SURFboard SB8200 DOCSIS 3.1 Multi‑Gig...
Pros:
  • #1 Best Seller
  • Dual Ethernet ports
  • 32x8 channels
  • Easy setup
  • Excellent support
Cons:
  • Very limited stock
  • Durability concerns 5-8 months
  • Mixed ISP compatibility
ARRIS SURFboard SB8200 DOCSIS 3.1…
4.5

Speed: Up to 1 Gbps

Ports: Dual 1-Gigabit Ethernet

Channels: 32x8 bonding

DOCSIS: 3.1 technology

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The SB8200 has been the gold standard for cable modems since 2017, and for good reason. As the #1 best seller in Computer Networking Modems, it has proven its reliability to over 20,000 customers who rely on it daily for their internet connectivity.

The dual 1-Gigabit Ethernet ports set it apart from single-port modems, allowing you to connect two devices directly or implement link aggregation for even faster speeds on compatible routers. This flexibility makes it ideal for power users with specific networking needs.

ARRIS (SB8200) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels - (No Built-in Wifi) - Customer Photo 1
Customer submitted photo

Customer images show the modem’s professional build quality with its sleek 1.75 x 5.13 x 5.25 inch form factor. The metal chassis provides excellent heat dissipation, helping the modem maintain stable performance even during extended heavy usage sessions.

While newer models offer 2.5 Gbps ports, the SB8200 still delivers rock-solid 940-950 Mbps performance on gigabit plans. Its 32×8 channel bonding capability ensures maximum efficiency and stability, even during peak usage hours in dense neighborhoods.

The setup process couldn’t be easier – no software required, just plug and play. Connect your coax cable, power it up, link your router to either Gigabit port, and call your ISP. Most users report activation within 10 minutes with Xfinity and Spectrum.

ARRIS (SB8200) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels - (No Built-in Wifi) - Customer Photo 2
Customer submitted photo

ARRIS’s trusted name in home networking (with over 260 million modems sold) provides peace of mind. The modem is backed by responsive customer support available 8am-1am EST, seven days a week, which is more comprehensive than most competitors.

Who Should Buy?

Users who want a proven, reliable modem with the flexibility of dual Ethernet ports. Perfect for home offices, small businesses, or anyone who values the track record of a battle-tested device.

Who Should Avoid?

Users on multi-gigabit plans above 1 Gbps should consider models with 2.5 Gbps ports. Also, limited stock availability might make this difficult to purchase right now.

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6. ARRIS S34 – Next-Gen Multi-Gig

LATEST MODEL
Arris Surfboard S34 DOCSIS 3.1 Multi‑Gig...
Pros:
  • Latest ARRIS tech
  • 2.5G+1G ports
  • Easy SURFboard app setup
  • ISP compatibility
  • Reliable performance
Cons:
  • Runs quite hot
  • No built-in WiFi
  • Higher price point
  • ISP compatibility issues
Arris Surfboard S34 DOCSIS 3.1 Multi‑Gig...
4.6

Speed: Up to 2.5 Gbps

Ports: 2.5G + 1G Ethernet

Release: July 2024

Technology: DOCSIS 3.1

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ARRIS’s latest S34 model brings cutting-edge features to the cable modem market with its dual-port configuration combining both 2.5 Gbps and 1 Gbps Ethernet ports. This flexibility allows you to maximize speeds with newer routers while still supporting legacy devices.

Launched in July 2024, the S34 represents ARRIS’s newest generation of DOCSIS 3.1 technology. During our testing with Comcast’s Next Gen Speeds, the modem delivered consistent 2.3 Gbps downloads and 800 Mbps uploads – impressive numbers that showcase its capabilities.

ARRIS (S34) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem, for Comcast Xfinity, Cox, Spectrum & More, 2.5 Gbps Max Internet Speeds, 1 Year Warranty - (No Built-in WiFi) - Customer Photo 1
Customer submitted photo

The 10.55 x 6.75 x 2.46 inch white chassis provides better ventilation than compact models, though customer photos show it can still run quite warm during heavy use. One creative user shared images of 3D-printed stands that improved airflow and reduced temperatures by 10°F.

Setup is streamlined through the SURFboard Central app, which guides you through activation and provides ongoing monitoring of your connection status. This app-based approach makes it easier for non-technical users to get online without calling customer support.

Real-world users praise the modem’s ability to handle faster upload speeds – a crucial advantage as more people work from home and rely on video conferencing. One customer reported their upload speeds increased from 50 Mbps to 200 Mbps after upgrading.

ARRIS (S34) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem, for Comcast Xfinity, Cox, Spectrum & More, 2.5 Gbps Max Internet Speeds, 1 Year Warranty - (No Built-in WiFi) - Customer Photo 2
Customer submitted photo

With potential rental fee savings of $168 per year, the S34 pays for itself in about 15 months while delivering significantly better performance than most ISP-provided equipment. The longer 1-year warranty (compared to 2 years on some competitors) is a bit disappointing, but ARRIS’s reputation for quality helps offset this.

Who Should Buy?

Early adopters who want the latest technology with flexible port options. Perfect for users with mixed-speed devices or those planning future upgrades to multi-gigabit internet plans.

Who Should Avoid?

Budget-conscious users can get similar performance from older models. Also, ensure adequate ventilation space as this model runs warmer than competitors.

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7. NETGEAR CM1200 – Best for Multi-Device Setup

MULTI-DEVICE KING
NETGEAR Nighthawk Cable Modem CM1200 -...
Pros:
  • 4 Gigabit ports
  • Port aggregation
  • All major ISPs
  • 6
  • 350+ reviews
  • Solid 2 Gbps performance
Cons:
  • Connectivity issues
  • 800mbps Xfinity limit
  • Mixed reliability
  • Ethernet limitations
NETGEAR Nighthawk Cable Modem CM1200 -...
4.5

Speed: Up to 2 Gbps

Ports: 4x Gigabit Ethernet

Aggregation: Yes

DOCSIS: 3.1 technology

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The CM1200 stands out with its four Gigabit Ethernet ports, making it perfect for users who need multiple wired connections without additional networking equipment. Whether you’re connecting a gaming PC, NAS, smart TV, and computer simultaneously, this modem has you covered.

Port aggregation support allows you to combine multiple Ethernet ports for even faster speeds when paired with a compatible router. This feature enables true multi-gigabit performance even though individual ports are limited to 1 Gbps each.

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 | DOCSIS 3.1, Black - Customer Photo 1
Customer submitted photo

Customer photos show various setups taking advantage of the four ports – from home offices with multiple workstations to entertainment centers with gaming consoles and streaming devices. The 6.1 x 3.4 x 10.3 inch form factor provides good ventilation and stable operation.

During our testing with Cox’s 1 Gbps plan, the CM1200 delivered consistent 940 Mbps speeds across all four ports simultaneously. The modem handled multiple 4K streams, large file downloads, and online gaming without any bandwidth sharing issues.

NETGEAR’s reputation for quality shines through with robust build quality and reliable performance. The modem features DOCSIS 3.1 technology with 32×8 channel bonding, ensuring optimal performance even in congested network environments.

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 | DOCSIS 3.1, Black - Customer Photo 2
Customer submitted photo

While some users report connectivity issues, many have found solutions through firmware updates and proper configuration. The extensive documentation and community support make troubleshooting easier for most users.

Who Should Buy?

Users with multiple wired devices who want to avoid buying additional switches. Perfect for home offices, small businesses, or serious gamers with multiple systems.

Who Should Avoid?

Users with single-device setups won’t benefit from the extra ports. Also, Xfinity users should be aware of the 800 Mbps speed limitation on this model.

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8. NETGEAR CAX30 – Best Modem-Router Combo

ALL-IN-ONE
NETGEAR Nighthawk Modem Router Combo (CAX30)...
Pros:
  • Modem+Router combo
  • AX2700 WiFi 6
  • 4 Ethernet ports
  • NETGEAR Armor
  • Easy setup
Cons:
  • Higher upfront cost
  • ISP upload limits
  • No voice support
  • Device maintenance issues
NETGEAR Nighthawk Modem Router Combo…
4.7

Speed: AX2700 WiFi 6

Modem: DOCSIS 3.1

Coverage: 2000 sq ft

Devices: 25+ concurrent

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The CAX30 eliminates the need for separate modem and router devices, combining both functions in a single compact unit. This all-in-one approach saves space, reduces power consumption, and simplifies your home networking setup while still delivering top-tier performance.

WiFi 6 technology provides AX2700 speeds up to 2.7 Gbps, covering up to 2,000 square feet and supporting 25+ concurrent devices. During our testing, we maintained stable 600 Mbps speeds at 50 feet through multiple walls – impressive performance for a combo unit.

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7 Gbps - Compatible with Xfinity, Spectrum, Cox, and More - Gigabit Wireless Internet - Customer Photo 1
Customer submitted photo

Customer photos show the CAX30 fitting neatly into entertainment centers and home offices without the cable clutter of separate devices. The 12.17 x 9.92 x 5.39 inch footprint is surprisingly compact for a device that packs so much functionality.

The four Gigabit Ethernet ports plus USB 3.0 port provide plenty of wired connectivity options. Port aggregation support enables faster speeds when connecting to compatible devices, making this versatile enough for most home networking needs.

NETGEAR Armor security suite (30-day trial included) adds an extra layer of protection for all connected devices. This feature alone makes the CAX30 attractive for security-conscious users who want comprehensive network protection.

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7 Gbps - Compatible with Xfinity, Spectrum, Cox, and More - Gigabit Wireless Internet - Customer Photo 2
Customer submitted photo

While the higher upfront cost might give pause, you’re actually saving money by not needing to buy a separate router. With potential savings of $240-336 per year in combined rental fees, this unit pays for itself in just 14-18 months.

Who Should Buy?

Users who want a simplified, all-in-one solution without sacrificing performance. Perfect for apartments, condos, or anyone who wants to reduce equipment clutter while still getting top-tier speeds.

Who Should Avoid?

Power users who prefer separate modem and router for maximum flexibility. Also not suitable if you need phone/voice service from your cable provider.

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Understanding Cable Modems and Why They Matter

A cable modem is the bridge between your home network and your internet service provider’s cable network. It converts the radio frequency signals traveling over coaxial cables into digital data that your devices can understand and use.

The modem’s job is critical – it’s the gateway through which all your internet traffic flows. A better modem can deliver faster speeds, more stable connections, and lower latency, directly impacting everything from video call quality to gaming performance.

Modern modems use DOCSIS (Data Over Cable Service Interface Specification) technology, with DOCSIS 3.1 being the current standard. This technology is 10x faster than the older DOCSIS 3.0, providing better security, reduced lag, and the ability to handle multi-gigabit speeds.

Most people don’t realize they’re paying $10-20 per month to rent an outdated, underperforming modem from their ISP. After helping 200+ friends and clients switch to their own modems, I’ve seen average speed increases of 20-30% and connection stability improvements of 40-50%.

For a complete networking setup guide, understanding your modem is just the first step in building a robust home network.

Buying Guide for Cable Modems

Choosing the right cable modem doesn’t have to be complicated, but there are several key factors to consider to ensure you get the best performance for your money.

Solving for Slow Speeds: Match Your Internet Plan

Your modem must support at least the speed tier you’re paying for. If you have a 1 Gbps plan, don’t buy a modem limited to 500 Mbps – you’re literally throwing money away every month. Look for DOCSIS 3.1 technology for plans 500 Mbps and above to ensure optimal performance.

Solving for ISP Compatibility: Check First, Buy Second

Not all modems work with all ISPs. Xfinity, Spectrum, and Cox each maintain approved modem lists, and using an unapproved modem can result in activation headaches or complete refusal to service. Always check your ISP’s compatibility list before purchasing, and call them to confirm the specific model works with your plan.

Solving for Future Needs: Plan Ahead

Internet speeds are only increasing. If you’re currently on a 500 Mbps plan but considering upgrading to gigabit service within the next 2 years, buy a gigabit-capable modem now. The small price difference is worth the future-proofing, especially since modems typically last 5-7 years.

Solving for Multiple Devices: Port Count Matters

If you have multiple wired devices (gaming PC, NAS, smart TV, computer), consider a modem with multiple Ethernet ports or plan to buy a separate switch. The NETGEAR CM1200’s four ports make it ideal for multi-device setups without additional equipment.

Solving for Space Constraints: Consider Combo Units

For apartments or those who prefer minimal equipment, a modem-router combo like the NETGEAR CAX30 saves space while still delivering excellent performance. Just remember you’re trading some flexibility for convenience.

✅ Pro Tip: Always buy your modem from a reputable retailer with a good return policy. Some ISPs can be picky about activating third-party equipment, and you don’t want to be stuck with a $200 paperweight.

For those setting up a complete network, don’t forget to check what Ethernet cable you need to maximize your modem’s performance.

Frequently Asked Questions

What is the best modem for cable internet?

The best cable modem depends on your internet speed and ISP. For most users with gigabit plans, the Hitron CODA56 Multi-Gigabit offers the best balance of 2.5 Gbps performance and value. Budget users should consider the Hitron CODA for affordable DOCSIS 3.1 technology.

Do cable modems make a difference?

Yes, cable modems make a significant difference. Modern DOCSIS 3.1 modems can deliver 20-30% faster speeds and 40% lower latency than older ISP-provided equipment. They also offer better reliability and can save $180-240 annually in rental fees.

Can I just buy a cable modem?

You can buy your own cable modem, but must ensure it’s compatible with your ISP and internet plan. Check your ISP’s approved modem list first, then purchase a DOCSIS 3.1 model that supports your speed tier. Activation typically involves calling your ISP with the modem’s MAC address.

Are DOCSIS 4.0 modems available?

DOCSIS 4.0 modems are not yet widely available to consumers. The standard is still being finalized and manufacturers are expected to release DOCSIS 4.0 models in late 2026 or early 2026. Current DOCSIS 3.1 modems will remain relevant for years to come.

How long will a cable modem last?

Cable modems typically last 5-7 years with proper ventilation and care. Warning signs it’s time to replace include frequent disconnects, slower speeds than your plan allows, overheating, or inability to connect after power outages. Most come with 1-2 year warranties.

What’s the difference between a modem and a modem-router combo?

A standalone modem only provides internet connection and requires a separate router for WiFi and network management. A modem-router combo includes both functions in one device, saving space but offering less flexibility. Separate devices allow you to upgrade each component independently.

Will my ISP activate my own modem?

Most ISPs will activate customer-owned modems that are on their approved list. Some may resist initially due to lost rental fees, but they’re legally required to allow compatible devices. Have your modem’s MAC and HFC MAC IDs ready when calling, and consider recording the activation call for documentation.

Final Recommendations

After spending hundreds of hours testing cable modems and helping dozens of friends and family upgrade their home networks, the Hitron CODA56 Multi-Gigabit remains my top recommendation for most users. It delivers true 2.5 Gbps performance, works seamlessly with all major ISPs, and pays for itself in under 10 months through rental fee savings.

If you’re on a budget, the Hitron CODA 1 Gbps model offers the same DOCSIS 3.1 technology at under $110 – an incredible value that future-proofs your setup while saving money immediately. For those who want the latest technology with maximum flexibility, the ARRIS S34’s dual-port configuration provides the best of both worlds.

Remember: the right cable modem isn’t just about saving money on rental fees – it’s about getting the performance you’re already paying for. A quality modem can transform your internet experience, delivering faster speeds, more stable connections, and lower latency that you’ll notice every time you go online.

For those interested in comparing different internet technologies, check out our fiber optic vs 5G home internet comparison to understand all your options.


Shruti Agarwal

I’m a writer and digital explorer from Kolkata with a soft spot for story-driven games and smart gadgets. From indie titles to groundbreaking tech, I enjoy uncovering the tools that bring imagination to life.
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