Consider Xfinity cable modem options for optimal performance.
Consider Xfinity cable modem options for optimal performance.
You have an Ubiquity setup and some cameras/access points. I’m considering upgrading your modem—currently using a Netgear combo. Reddit seems to think it’s not impressive, but you’re looking for something under $200 with Xfinity (no fiber nearby). Is this switch even worth it?
The benefit of using a separate modem and router is eliminating a single point of failure and allowing independent upgrades. Typically, a router lasts longer than a modem—both facing higher chances of failure and becoming outdated technologically first. You can turn off the routing functions on a combined device and use it solely as a modem if needed. Alternatively, you can purchase a standalone router and continue using it just as your modem. What model do you currently have, and what speed does your internet connection provide?
The main reason we chose to purchase our own modem was to avoid monthly payments from Xfinity for rentals. Back then it cost $10 a month, now they charge $15. Using the combo unit in bridge mode works just as well. However, you didn’t mention the specific model of the combo unit. With the upgrades happening nationwide, your unit might not support the newest speeds. For faster upload speeds, only certain models on the upgraded list will work. The lower list will only offer the slower current speeds. Edited June 13, 2024 by Donut417 Fixed images not displaying
I updated the images in my post with the latest recommend device list from Comcast. Remember, the items at the bottom are for modems that don’t support quicker uploads and aren’t available everywhere yet. Only change what you have if you intend to use faster uploads once they’re released in your region—or if you require speeds beyond Gigabit Down.
The discussions vary across the forums. Old posts from over six months ago seem unremarkable. Recent counterarguments within the last few months show more progress, though opinions remain divided among early adopters. If Comcast confirms the speeds mentioned by @Donut417, then the UCI has improved since it was six months prior. I recall hearing that Comcast would only fully roll out symmetric speeds with DOCSIS 4.0 devices. Personally, I’m still experiencing issues—my S33 loses connection during hot weather, overheats, and my Unifi console frequently shows high lag. Perhaps the placement in the rack case is to blame, though it’s well-ventilated. A $300 modem is a solid choice for the ongoing benefits, especially with 24/7 operation. Still, I remain uncertain about the UCI overall. I really want higher upload speeds, but Comcast claims my bandwidth is only 100 Mbps while my S33 caps it at 25 Mbps. What a difference in quality! The main benefit of this modem is that it comes from a company offering regular updates and support. It’s their sole model yet, so product variety hasn’t fully matured. The UCI 2 could be just a prototype with a coax port, while the Max Pro models will likely be premium devices around $500, similar to current options, but with matching screens like other products. I’m confident about this!
This might indicate an S33 overheating problem or a signal issue. As temperatures rise, the coax can expand at the poles and become less effective, making the signal weaker. It's unclear how D4.0 will be rolled out across the country—seems like Commscope, the company that makes amplifiers for cable providers, was facing challenges before now. They appear to have finally released the equipment. Comcast upgraded certain areas that were previously Node+0, but other regions still needed new Amps. Another notable point is that retail D4.0 cable modems aren't available yet.
All the utility lines in my area are underground. Generally tends to happen during hot days and when we are putting a high demand on it (streaming, downloading, etc.) at the same time. Yeah I was surprised to come across the article. I swear it was on a Comcast website that I found it. I can see them dropping all support for faster uploads when D4.0 is released just because it's more better and it's just somehow easier for them to put full support into one technology. Anything to rent their Comcast branded modems for a monthly fee with an upgrade possibility every three years. So $540 ($15/mo) to $900 ($25/mo) for their modem rentals over three years. The UCI somehow looks cheap.
It will take several years before upgrades are completed. As mentioned, Comcast’s equipment now supports Amps, but they began releasing them recently. They abandoned Node +0 and had to wait for D4 compatible versions. From a legal standpoint, they can’t force you to rent modems due to FCC rules that protect customer-owned devices. The $25 rental charge applies only if you have “unlimited data,” which they chose not to enforce on D4.0 modems either.