Head-to-head · Best Standalone DOCSIS 3.1 Cable Modems

Motorola MB8611 vs Netgear CM1000

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Netgear CM1000 comes out ahead by a clear margin (4.5 vs 4.2). Netgear CM1000 is best for: users replacing older modems seeking reliability and ease of setup. Read the strengths below before deciding.

Ranked #4 in Best Standalone DOCSIS 3.1 Cable Modems

Motorola MB8611

4.2

1 sourceall derived$300.94as of Sep 25

The Motorola MB8611 is a DOCSIS 3.1 modem with a 2.5Gbps Ethernet port and support for up to 32 downstream and 8 upstream channels. Tech Reviews called it a great modem, pointing to its backward compatibility and AQM for low-latency performance. Firmware is the weak spot: users have reported stability problems, particularly on version 21.3.7, and one switched to an Arris S34 after prolonged trouble. It's approved for Comcast Xfinity, Cox, and Spectrum. Choose it for fast internet, not if you need voice capabilities or can't tolerate firmware instability.

Strengths

— 2.5Gbps Ethernet port for high-speed wired connections
— Fast DOCSIS 3.1 speeds with support for 32 downstream and 8 upstream channels
— Backward compatible with DOCSIS 3.0

Watch-outs

— No voice capabilities
— Has firmware issues reported by some users (specifically 21.3.7 firmware causing instability)

$300.94 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best Standalone DOCSIS 3.1 Cable Modems

Netgear CM1000

4.5

1 source$199.99as of Sep 25

The Netgear CM1000 is a DOCSIS 3.1 cable modem that holds Gigabit speeds reliably, which makes it a straightforward upgrade from an older unit. Reviews consistently mention how easy it is to set up, how well it holds up, and how much faster it is than earlier models like the CM500 and CM600. Customer feedback reports compatibility with major ISPs including Comcast Xfinity and strong performance on 1Gbps plans. Complaints are minor: no coaxial cable in the box and a somewhat flimsy base. It's a common recommendation for anyone trying to stop renting ISP equipment.

Strengths

— Excellent performance with Gigabit-class internet plans, per Dong Knows Tech
— Reliable and durable build quality
— Easy setup process with quick activation via ISP, per Dong Knows Tech

Watch-outs

— Base is described as flimsy and modem can topple easily, per Dong Knows Tech

$199.99 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Motorola MB8611

The Motorola MB8611 has a 2.5Gbps Ethernet port, as does the NETGEAR Nighthawk CM2000, where the Netgear CM1000 and Motorola MB8600 list 1Gbps LAN ports. It costs more than the CM1000 and the MB8600. Its 21.3.7 firmware has been reported to cause instability, and it has no voice capabilities.

Netgear CM1000

The Netgear CM1000 has a 1Gbps LAN port, where the Motorola MB8611 and NETGEAR Nighthawk CM2000 both have 2.5Gbps Ethernet ports, and it costs less than both. It is rated for 1Gbps downloads against a 6Gbps top WAN speed on the Motorola MB8600, which also supports WAN Link Aggregation. Its base is flimsy and it ships without a coaxial cable.

Specs side-by-side

Spec	Motorola MB8611	Netgear CM1000
Docsis Version	3.1	3.1 (3.0 30×8 compatible)
Downstream Channels	32	32 downstream and 8 upstream channels
Upstream Channels	8	8 upstream channels
Dimensions	7.25"L x 2.25"W x 7.88"H	8.8 x 3.4 x 5.9in
Max Download Speed	2,500 Mbps	1Gbps
Ethernet Ports	—	1Gbps LAN, 1x Coax
Weight	—	.95lb (431g)

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