You should contact the service provider to discuss upgrading your modem.
You should contact the service provider to discuss upgrading your modem.
I currently lease my modem/switch/router from my cable internet provider. With three gaming PCs connected via wired links and at least one TV streaming over Wi-Fi most days, I’m considering an upgrade to something that will work better and deliver significantly improved performance. I have no idea where to begin. I’m completely unfamiliar with the difference between a router and a modem, so any product recommendations and a brief explanation would be extremely useful. Thanks! I’ve attached a picture of the cable routers and modems listed as compatible by my ISP on their site, though I’m not sure if there are more options. Updated January 12, 2023 by CyprusMiraque
Begin by checking if you can manage your own modem setup. The process varies by location. In the U.S., cable providers must offer customers their own modems and gateways. If yours is available, simply purchase it and register it with your ISP. If not, you might switch the ISP device to bridge mode, disabling router features and turning it into a basic modem—then choose any router you prefer. Cable internet modems convert coaxial signals into Ethernet, assigning an IP address. The router uses this IP to share the connection via NAT with multiple devices. Because of NAT, the router establishes a private network for your home, enabling file sharing and services while typically providing a DHCP server, firewall, possibly a switch, and a wireless access point. Often, it bundles a gateway, modem, and router into one unit.
You’ll likely need a specific modem from your provider’s list. For connecting computers via Ethernet, you’ll also require an Ethernet cable and possibly a switch or router depending on your setup.
I need a router too, unless you opt for a single all-in-one device. I’ll check if they offer a broader selection. I just noticed Docsis 3.0 modems appear on that list. Most companies are now using Docsis 3.1, and some are planning to roll out Docsis 4.0. Docsis 3.1 supports multi-gigabit downloads (provided the modem has a 2.5 Gbps Ethernet port). Comcast’s current connection is 1.4 Gbps down with 45 Mbps up, and I hear 100 Mbps upload speeds are coming soon in certain areas. There’s also talk of 2 Gbps potentially launching shortly.
You just spoke with your ISP and they were really supportive. They suggested a DOCSIS 3.0 modem because some users face problems getting a stable connection with 3.1 modems in certain areas. The representative recommended the Arris SB6190, which might be a good fit. You’ll likely need to do more research on routers next. From what I’ve learned, these devices are usually where you compare features like connectivity and performance.
This modem has a problem from Intel. The Puma 6 chip was faulty and couldn't be resolved with updates. There were lawsuits involved, or Arris faced legal action. Users report possible latency problems. All Puma 6 modems seem affected, specifically the 32x8 channel Docsis 3.0 model, which uses that chipset. You might want to switch to a 24x8 setup or stick with your ISP equipment. There’s a discussion thread on DSL reports about this issue here: https://www.dslreports.com/forum/r311222...Discussion. In 2022, some providers can’t support Docsis 3.1. I think they’re avoiding it due to interference on their coaxial lines. Docsis 3.1 requires tighter signal control than current setups allow. Modems for cable internet are rated by Docsis standards, so speeds depend on what your provider can deliver. For instance, an 8x4 modem can reach up to 260 Mbps on Comcast, but others like Charter only support 100 Mbps. Routers are even more complex—they handle NAT, DHCP, firewalls, etc., and their performance varies widely based on features. Faster connections like Gigabit make it harder to find routers that meet the required speeds. On slower connections, the problem is less severe.
Reflecting on the article and product links:
- The Wirecutter review offers a detailed analysis of cable modems, highlighting performance and value.
- The New York Times WireCutter piece discusses the best cable modems, focusing on features and user experience.
Both sources aim to help consumers choose reliable internet solutions.
I don’t have any prior experience with that modem, but I’d say as long as it delivers the speeds you’re paying for and isn’t a 32x8 model, it should work fine. It’s also a reasonable price if you plan to upgrade your modem later, since future providers needing Gigabit+ will likely require Docsis 3.1 or possibly 4.