
Arris SURFboard SB8200
Score: 75/100
Motorola MT7711
Score: 73/100Rankings

The ARRIS SURFboard SB8200 is a DOCSIS 3.1 cable modem delivering very high theoretical speeds and dual Gigabit Ethernet ports. It lacks built-in Wi-Fi and can run hot, with some users experiencing lag spikes and port issues. Best suited for households that already have a separate router and need a high-performance wired modem.

The Motorola MT7711 is an all-in-one DOCSIS 3.0 modem, AC1900 Wi-Fi router, and two-port Xfinity Voice solution. Its 600 Mbps speed ceiling and Xfinity-only certification restrict its use for higher-speed or non-Xfinity services. Best suited for Comcast customers needing integrated voice and Wi-Fi.
| Attribute | ![]() | ![]() |
|---|---|---|
10,000 Mbpsbest | 1,000 Mbps | |
2,000 Mbpsbest | 246 Mbps | |
2 ports | 4 portsbest | |
| ↓ lower better | — | 48 Wbest |
| ↓ lower better | 0.608 kgbest | 1.718 kg |
2 yearsbest | 2 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Maximum Download Speed (Mbps) | 10000 Mbps | 1000 Mbps |
Maximum Upload Speed (Mbps) | 2000 Mbps | 246 Mbps |
Network(1) | ||
DOCSIS Standard | DOCSIS 3.1 | DOCSIS 3.0 |
Connectivity(1) | ||
Wi‑Fi Standard | None | 802.11ac |
Ports(1) | ||
Ethernet Ports (count) (ports) | 2 ports | 4 ports |
Build & Design(2) | ||
Weight (kg) | 0.6078 kg | 1.718 kg |
Dimensions (HxWxD) (mm) | 133.35x130.30x44.45 mm mm | 9.0x2.25x8.25 inches mm |
General(1) | ||
Provider Compatibility | Xfinity, Cox, Spectrum | Comcast Xfinity Internet & Voice (up to 600 Mb/s) |


Products in the top-left offer the best value (high score, low price).

Reviewers highlight the SB8200's ability to deliver true gigabit speeds on DOCSIS 3.1 networks, praising its dual Gigabit ports, solid build, and proven compatibility with Cox and Xfinity. They note the lack of built-in Wi-Fi as a trade-off and caution that real-world speeds depend on ISP provisioning, while occasional lag spikes are mentioned as a minor drawback.
Users consistently praise the modem's speed, ease of setup, compact design, and compatibility with major ISPs, but many complain about the unit running hot, occasional lag spikes, and Ethernet port failures that cause connectivity drops.

Professional reviewers commend the MT7711 for its straightforward, sub-15-minute installation and the value of an all-in-one modem-router-phone solution tailored to Xfinity customers.
Everyday users praise the quick plug-and-play setup, reliable Wi-Fi coverage for multiple devices, clear VoIP calls, and the savings from consolidating three devices into one. Common complaints revolve around the 600-Mbps speed ceiling, occasional activation reboots, limited 2.4 GHz range in larger homes, and the fact that the unit only works with Comcast Xfinity services.