Optimum operates as the consumer-facing brand of Altice USA, covering densely populated markets in New York, New Jersey, Connecticut, and parts of the Southeast and West Texas. Their cable internet plans run on DOCSIS 3.1 infrastructure, with residential plans at 300 Mbps, 500 Mbps, and 1 Gbps download speeds. Upload speeds are asymmetric, in the 35 Mbps range on most plans. In select markets, Optimum has begun deploying fiber-to-the-home service under the Optimum Fiber brand, offering symmetric gigabit speeds.
Optimum rents a combined modem-router unit called the Smart Router for $10 per month. The device handles both DOCSIS modem and Wi-Fi router functions. While functional, it is entry-level hardware that does not perform well in larger apartments, multi-story homes, or environments with many connected devices. Returning the Smart Router and buying your own approved DOCSIS 3.1 modem plus a quality router costs less over two years while delivering meaningfully better performance and control.
Top Picks at a Glance
| Pick | Best for | Why it stands out | Watch out for |
|---|---|---|---|
| ASUS RT-AX88U Pro | Best overall router for Optimum | Dual 2.5G ports, strong Wi-Fi 6, ASUSWRT firmware with deep controls and AiMesh | Best paired with a separate DOCSIS 3.1 modem like Motorola MB8611 |
| TP-Link Deco XE75 | Best mesh for Optimum households | Wi-Fi 6E tri-band mesh with 2.5G backhaul; excellent for multi-story NYC apartments and houses | Requires modem purchase separately; two units minimum for mesh |
| Netgear CM2000 + router | Best modem and router combo value | CM2000 is a DOCSIS 3.1 modem with 2.5G LAN port; pair with any Wi-Fi 6 router for a complete setup | Two devices to manage; Netgear CM2000 approval should be verified with Optimum |
| GL.iNet Flint 2 | Best budget pick for Optimum | Wi-Fi 6, 2.5G WAN, OpenWrt firmware, WireGuard VPN; under $100 | More technical setup than consumer routers; needs modem purchased separately |
| eero Pro 6E | Best smart home router for Optimum | Simple app setup, solid mesh performance, great Alexa and smart home integration | Limited advanced controls; eero+ subscription needed for some parental controls |
Our Picks in Detail
- Dual 2.5G ports, strong Wi-Fi 6, ASUSWRT firmware with deep controls and AiMesh
- Best paired with a separate DOCSIS 3.1 modem like Motorola MB8611
- Wi-Fi 6E tri-band mesh with 2.5G backhaul; excellent for multi-story NYC apartments and houses
- Requires modem purchase separately; two units minimum for mesh
- CM2000 is a DOCSIS 3.1 modem with 2.5G LAN port; pair with any Wi-Fi 6 router for a complete setup
- Two devices to manage; Netgear CM2000 approval should be verified with Optimum
- Wi-Fi 6, 2.5G WAN, OpenWrt firmware, WireGuard VPN; under $100
- More technical setup than consumer routers; needs modem purchased separately
- Simple app setup, solid mesh performance, great Alexa and smart home integration
- Limited advanced controls; eero+ subscription needed for some parental controls
Optimum in the New York Metro: Why Router Quality Matters More Here
Optimum's service area is among the most densely populated in the US. Manhattan apartments, suburban New Jersey homes, and Long Island houses all have one thing in common: they are surrounded by neighbors, each with their own Wi-Fi network broadcasting on the same channels. This RF congestion means the 2.4 GHz and 5 GHz bands are often heavily congested, and a router that can leverage the 6 GHz band — available only on Wi-Fi 6E and Wi-Fi 7 routers — gains a significant practical advantage in dense environments.
The TP-Link Deco XE75 and eero Pro 6E both support Wi-Fi 6E, opening up the 6 GHz band which has more available channels, less interference from legacy devices, and lower latency. In a typical dense New York metro environment, switching from a 5 GHz Wi-Fi 5 or Wi-Fi 6 connection to a 6 GHz Wi-Fi 6E connection can dramatically improve real-world speeds and latency for devices that are within reasonable range of the router.
Optimum Fiber: A Different Setup Entirely
In markets where Optimum has deployed fiber-to-the-home, the setup differs significantly from cable. No DOCSIS modem is required — a technician installs an ONT at your home that handles the optical-to-electrical conversion. Optimum Fiber gateways connect to the ONT and manage authentication. As with other fiber ISPs, you can configure the Optimum Fiber gateway in passthrough mode to run your own router behind it as the primary network device.
Optimum Fiber plans offer symmetric speeds up to 1 Gbps or higher in some markets, eliminating the upload bottleneck that plagues cable plans. If Optimum Fiber is available at your address and you are currently on cable, the upgrade is worth considering — particularly if you work from home or regularly upload large files. The router requirements for Optimum Fiber are the same as for other symmetric gigabit fiber services: a 1G or 2.5G WAN port and strong Wi-Fi coverage for your home size.
The Financial Case for Owning Your Equipment
Optimum's $10 per month Smart Router rental adds up to $120 per year. If Optimum also charges a separate modem rental fee for customers not using the Smart Router combo unit, the total equipment rental cost could be higher. A Motorola MB8611 modem costs about $100 and works with Optimum. A quality Wi-Fi 6 router like the ASUS RT-AX88U Pro costs around $180. Total upfront investment: $280. Over two years of the $10 monthly rental, you would have paid $240. By month 24, owning your equipment pays off and saves you money every month after that — while giving you a meaningfully faster and more controllable network.
Beyond the financial argument, owning your equipment means you control firmware updates, can configure features Optimum's router does not expose, and are not subject to Optimum making changes to the rented device remotely. Your network, your rules.
Frequently Asked Questions
Can I use my own modem with Optimum?
Yes. Optimum supports customer-owned DOCSIS 3.1 modems on their approved device list. Compatible modems include the Motorola MB8611, Netgear CM2000, and Arris SB8200. Verify your specific modem model against Optimum's current approved list before purchasing, as compatibility can vary by market. Once your modem is activated with Optimum support, you connect your own router to its LAN port and return the Smart Router to stop the rental charge.
Does Optimum throttle internet speeds?
Optimum does not advertise equipment-based throttling. However, Optimum has faced criticism for network congestion during peak hours, particularly in densely populated areas of the New York metro region. This is a network-level issue unrelated to your router hardware. A VPN can sometimes help route around congested peering points, and the GL.iNet Flint 2 makes router-level VPN setup straightforward.
What is Optimum's fiber service called?
Optimum has been rolling out fiber-to-the-home service in select markets under the Optimum Fiber brand. In fiber areas, no DOCSIS modem is needed — an ONT is installed at the home. Optimum Fiber delivers symmetric speeds up to 1 Gbps or higher in some markets. Check Optimum's website to see if fiber is available at your address, as availability is expanding.
Does Optimum have data caps?
Optimum does not currently enforce strict monthly data caps on residential internet plans, which is an advantage over Cox and Xfinity. Their terms of service include fair-use language, but typical residential usage is not at risk. For most households, Optimum's lack of data caps means no overage fees and no need to monitor monthly consumption.