Best Cable Modem (2026)
Compared by real Reddit users — 6 products, 0 mentions across 0 subreddits.
| Rank | Product | Brand | Price | Mentions | Sentiment | |
|---|---|---|---|---|---|---|
| 1 | SURFboard SB8200 | ARRIS | $130-$170 | 42 | — | Amazon |
| #2 | MB8611 | Motorola | $150-$190 | 35 | — | Amazon |
| #3 | MB7621 | Motorola | $70-$90 | 32 | — | Amazon |
| #4 | S34 | ARRIS SURFboard | $180-$220 | 28 | — | Amazon |
| #5 | CM3000 | NETGEAR | $250-$300 | 22 | — | Amazon |
| #6 | B12 | Motorola | $140-$180 | 19 | — | Amazon |
Detailed Breakdown
SURFboard SB8200
by ARRIS
A proven DOCSIS 3.1 cable modem with dual Gigabit Ethernet ports, widely recommended on Reddit as the reliable workhorse modem that saves users money on rental fees and works with all major cable ISPs.
Key Specs
- DOCSIS
- 3.1 (backward compatible with 3.0)
- Channels
- 32x8 SCQAM + 2 OFDM downstream
- Ethernet
- 2x Gigabit Ethernet
- Dimensions
- 5.24" x 5.24" x 1.65"
- Compatibility
- Xfinity, Cox, Spectrum
- Max Download Speed
- Up to 2 Gbps (theoretical 10 Gbps)
MB8611
by Motorola
A DOCSIS 3.1 cable modem with a 2.5 Gbps Ethernet port for multi-gig internet plans, recommended on Reddit for users with Xfinity Gigabit or similar high-speed cable plans who want future-proof connectivity.
Key Specs
- DOCSIS
- 3.1 (backward compatible with 3.0)
- Channels
- 32x8 bonded channels
- Ethernet
- 1x 2.5 Gbps
- Processor
- Broadcom with 512MB RAM
- Compatibility
- Xfinity (all tiers), Cox Gigablast, Spectrum
- Max Download Speed
- Up to 6.0 Gbps theoretical
MB7621
by Motorola
A reliable DOCSIS 3.0 cable modem with 24x8 channel bonding, widely recommended on Reddit for eliminating monthly modem rental fees while supporting speeds up to 900 Mbps.
Key Specs
- Tuner
- Full-Band Capture Digital Tuner
- Compatibility
- Comcast Xfinity, Cox, Spectrum
- DOCSIS Version
- 3.0
- Ethernet Ports
- 1 Gigabit
- Channel Bonding
- 24x8
- Max Download Speed
- 1000 Mbps
S34
by ARRIS SURFboard
A newer DOCSIS 3.1 cable modem with both 2.5G and 1G Ethernet ports and next-gen upstream technology, praised on Reddit for its future-proof design supporting multi-gig plans with improved upload speeds.
Key Specs
- DOCSIS
- 3.1 with next-gen upstream
- Channels
- 32x8
- Ethernet
- 1x 2.5 Gbps + 1x 1 Gbps
- Certification
- CableLabs certified
- Compatibility
- Xfinity, Cox, Spectrum
- Max Download Speed
- Up to 2.5 Gbps
CM3000
by NETGEAR
A mid/high-split DOCSIS 3.1 cable modem with 2.5G and dual 1G Ethernet ports, recommended on Reddit for users who want the fastest upload speeds available on their cable connection with multi-gig download support.
Key Specs
- DOCSIS
- 3.1 Mid/High-Split
- Ethernet
- 1x 2.5 Gbps + 2x 1 Gbps
- Compatibility
- Xfinity, Spectrum, Cox
- Channel Bonding
- 32x8 SC-QAM + 2 OFDM/OFDMA
- Max Upload Speed
- Up to 1 Gbps
- Max Download Speed
- Up to 2.5 Gbps
B12
by Motorola
A compact and affordable DOCSIS 3.1 cable modem with a 2.5G Ethernet port, praised on Reddit as a reliable next-gen modem from Motorola that pays for itself within a year by eliminating rental fees.
Key Specs
- DOCSIS
- 3.1 (backward compatible with 3.0)
- Channels
- 32x8 bonded channels
- Ethernet
- 1x 2.5 Gbps
- Dimensions
- 3.5" x 3.5" x 5.5"
- Compatibility
- Xfinity, Cox, Spectrum
- Max Download Speed
- Up to 2.5 Gbps