Netgear CM1000 vs. Arris SB8200: Comprehensive Product Comparison Review

Two of the most popular DOCSIS 3.1 cable modems on the market right now are the Netgear CM1000 and the Arris SB8200. But with fairly similar specs and features, how do you choose between the Netgear CM1000 vs. Arris SB8200?

In this ultimate showdown, we’ll compare every aspect of these two powerhouse modems side-by-side: speeds, hardware, design, pricing, and more.

Quick Verdict: Netgear CM1000 vs. Arris SB8200

If you require 2 Ethernet connections with additional link aggregation features and 3 GB of RAM with support of high-speed internet plans up to 1 Gbps, the Arris SB8200 is the way to go.

For users looking for a reliable, one-port with lesser RAM and a straightforward modem that supports high-speed internet plans up to 1 Gbps for everyday use, the Netgear CM1000 is a fantastic option.

Netgear CM1000 Pros and Cons


  • Compact size and design
  • Auto network configuration capability
  • DOCSIS 3.1 multi-gig speeds
  • Compatible with Cox, Spectrum, Xfinity, and others.
  • Supports Internet plan up to 1 Gbps.


  • Only 1 Ethernet port (no aggregation)
  • Lower RAM than SB8200
  • Lacks spectrum analyzer tool
  • Shorter 1 year warranty

And for the Arris SB8200:

Arris SB8200 Pros and Cons


  • 2 Ethernet ports for link aggregation
  • 3GB RAM for solid performance
  • Spectrum analyzer for diagnostics
  • Runs relatively cool
  • 2-year warranty
  • Compatible with Cox, Spectrum, Xfinity, and others.
  • Supports Internet plan up to 1 Gbps.


  • Larger footprint
  • No auto network configuration
  • Some users report firmware and compatibility issues.

Feature Comparison – Netgear CM1000 vs. Arris SB8200

FeatureNetgear CM1000Arris SB8200Winner
DOCSIS Standard3.13.1Tie
Ethernet Ports12Arris SB8200
RAM3 GBLess than 3 GBArris SB8200
Max SpeedUp to 1 GbpsUp to 10 GbpsArris SB8200
ISP CompatibilityCompatible with Cox, Spectrum, Xfinity, and othersCompatible with Cox, Spectrum, Xfinity, and others.Tie
Dimensions8.8 x 3.4 x 5.9 in5.13 x 1.7 x 5.25 inArris SB8200

Netgear CM1000 vs Arris SB8200: Key Differences

While the CM1000 and SB8200 share the same maximum theoretical speeds, they do differ across some key areas:

1. Number of Ports

One of the biggest differences lies in the number of built-in Gigabit Ethernet ports:

  • Arris SB8200: 2 Gigabit Ethernet ports
  • Netgear CM1000: 1 Gigabit Ethernet port

This gives the SB8200 a slight edge for those wanting wired connectivity to multiple devices. The extra port also enables link aggregation/port bonding for combining two connections to unlock faster speeds exceeding 1 Gbps.

So if you want more wired expansion capabilities down the line, the Arris SB8200 is the way to go.

Building on the above point, the Arris SB8200’s two Ethernet ports allow it to support link aggregation (also called port bonding).

This feature combines two Ethernet connections for double the throughput, allowing the SB8200 to theoretically reach speeds upwards of 2 Gbps. The Netgear CM1000 maxes out at 1 Gbps with its single port.

However, link aggregation requires support from both your modem and router. So you’d need to invest in a compatible multi-gig router as well. Still, if you want more future-proofing, the SB8200 has an edge.

3. Hardware & Processing Power

Another big difference lies under the hood with the internal hardware specs:

  • Arris SB8200: 3GB RAM, Broadcom chipset
  • Netgear CM1000: 256MB RAM, Broadcom chipset

With 3GB RAM compared to just 256MB, it’s clear the Arris SB8200 packs a lot more memory and likely faster processing capabilities. This helps with managing heavier bandwidth usage.

However, both utilize the highly reliable Broadcom chipset. So you can expect great performance and stability from either option.

4. Design & Aesthetics

There are also some modest design differences in terms of size, weight and aesthetics:

  • The Netgear CM1000 is smaller and lighter at just 0.84 pounds.
  • The Arris SB8200 is larger and heavier at 2.2 pounds.

The CM1000 takes a more compact black plastic approach while the SB8200 goes for a shinier, curvier white design. So those wanting a smaller footprint may prefer the Netgear. But overall aesthetics simply come down to taste.

Both units do an excellent job with heat management via ample ventilation to prevent overheating. So no concerns there.

5. Auto Configuration

Here’s one hidden feature that gives the Netgear CM1000 an advantage:

The CM1000 comes equipped with auto configuration functionality for your network settings. This makes it easier to get connected and make subsequent tweaks.

The SB8200 lacks any built-in auto configuration capabilities. So the Netgear takes the cake when it comes to simpler network management.

6. Price

Perhaps one of the biggest purchasing factors comes down to everyday pricing.

Buying your own cable modem instead of renting from your Internet Service Provider (ISP) ends up saving money in the long run. And between buying the SB8200 and CM1000, you’ll usually pay less upfront for the CM1000.

However, it typically only amounts to $10 to $20+ differences. So if you can snag a sale on the SB8200, the pricing gap becomes negligible.

Similarities Between the Netgear CM1000 and Arris SB8200

Aside from the differences called out above, the CM1000 and SB8200 share much common ground:

  • Both DOCSIS 3.1 compliant
  • Compatible with Comcast Xfinity, Cox, and most major cable ISPs
  • Capable of gigabit internet download speeds
  • Utilize the same Broadcom chipset (excellent reliability)
  • Backwards compatible with DOCSIS 3.0
  • Two year manufacturer warranties
  • Plenty of heat dissipation and ventilation
  • Easy installation and setup process

So if you don’t need the fancy extras like link aggregation or network configuration settings, you may benefit by going with the cheaper CM1000. But again, the Arris SB8200 pulls ahead when you factor everything in.

Customer Reviews Analysis

Reviewing customer feedback, both modems are praised for their reliability and speed. The Netgear CM1000 is lauded for its straightforward setup and consistent performance. The Arris SB8200, however, receives extra points for its additional Ethernet port, though some users mention firmware concerns.

Who Should Buy the Netgear CM1000?

The Netgear CM1000 is ideal for users seeking a reliable, no-fuss modem that delivers solid performance for everyday internet use. Its wide ISP compatibility makes it a versatile choice.

Who Should Buy the Arris SB8200?

Tech enthusiasts and users with higher connectivity needs will find the Arris SB8200 more appealing, especially those planning for future speed upgrades or requiring multiple direct connections.

Conclusion: Which is Better – Netgear CM1000 vs SB8200?

When all is said and done, both the Netgear CM1000 and Arris SB8200 represent top-tier solutions for those wanting to upgrade to DOCSIS 3.1 gigabit cable internet.

You really can’t go wrong with either modem. However, if squeezing every ounce of future speed potential and performance out of your cable connection matters, then we recommend the Arris SB8200 above all else.

The key advantages of dual Ethernet ports for link aggregation, a robust 3GB RAM, and network diagnostic tools like the spectrum analyzer make the SB8200 a better long-term solution for the connected home.

But for users looking for a reliable, straightforward modem for everyday use, then the CM1000 still delivers incredibly solid gigabit DOCSIS 3.1 performance in a compact form factor for less.

Hopefully, this detailed showdown has helped highlight the key similarities and differences between the Netgear CM1000 and Arris SB8200 cable modems. Your multi-gig home network awaits!

Frequently Asked Questions

Are these modems compatible with all ISPs?

While both modems have wide compatibility, it’s crucial to check with your specific ISP to ensure support.

Can I use these modems for my home Wi-Fi network?

Yes, but you’ll need to connect them to a Wi-Fi router as these devices are modems only.

Do these modems support voice services?

Typically, standalone modems do not support voice services. You might need a separate device or a modem-router combo for that.

What is DOCSIS 3.1?

DOCSIS 3.1 is the latest data over cable services interface specification, allowing for higher internet speeds and more efficient data transmission.

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