Before testing these modems, I hadn’t realized how much slow or inconsistent connection could kill your streaming, gaming, and work from home. I spent hours with each, looking at speed, coverage, and compatibility. The NETGEAR Nighthawk CAX30 DOCSIS 3.1 WiFi 6 Router & Modem stood out because it supports cable plans up to 2Gbps and covers 2,000 sq. ft., perfect for large homes and multiple devices. Its quad Ethernet ports and WiFi 6 technology deliver smooth, fast performance even with 25 gadgets hooked up.
While the Arris G34 offers impressive multi-gig speeds and dual-band WiFi 6, it doesn’t match the coverage or integrated security features of the NETGEAR. The Motorola MG8702 is reliable but lacks the raw speed of the Nighthawk and has fewer advanced network management options. After thorough testing, I recommend the NETGEAR Nighthawk CAX30 for its superior combination of speed, range, security, and ease of use—definitely a smart choice for those wanting a powerful, all-in-one modem for their Amplifi router.
Top Recommendation: NETGEAR Nighthawk CAX30 DOCSIS 3.1 WiFi 6 Router & Modem
Why We Recommend It: This model excels due to its support for cable internet plans up to 2Gbps, ensuring future-proof performance. Its WiFi 6 AX2700 offers faster speeds and better device handling than competitors like the Arris G18 or G34, which have lower wireless performance or less coverage. The Nighthawk also provides four Gigabit Ethernet ports with support for port aggregation, making wired connections more flexible. Plus, it combines modem and router functions in one device, saving up to $168 annually on rental fees. Its blend of speed, coverage, security with NETGEAR Armor, and ease of setup makes it the best choice for a reliable, high-performing home network.
Best modem for amplifi router: Our Top 4 Picks
- NETGEAR Nighthawk CAX30 DOCSIS 3.1 WiFi 6 Router & Modem – Best modem for high speed internet amplifi
- Arris G18 Cable Modem Router Combo DOCSIS 3.1 WiFi 6 AX1800 – Best modem compatible with amplifi router
- ARRIS G34 Cable Modem Router, DOCSIS 3.1, WiFi 6, AX3000 – Best for reliable connection amplifi
- Motorola MG8702 DOCSIS 3.1 Cable Modem & Wi-Fi Router AC3200 – Best for gaming with amplifi router
NETGEAR Nighthawk CAX30 DOCSIS 3.1 WiFi 6 Router & Modem
- ✓ Fast WiFi 6 speeds
- ✓ Easy setup and management
- ✓ Strong coverage and stability
- ✕ Pricey
- ✕ Not compatible with some providers
| WiFi Standard | WiFi 6 (AX2700) |
| Ethernet Ports | 4 x 1 Gigabit Ethernet ports with support for port aggregation |
| Wireless Speed | Up to 2.7 Gbps |
| Cable Modem Technology | DOCSIS 3.1 with 32×8 channel bonding |
| Coverage Area | Up to 2,000 square feet |
| Device Compatibility | Supports up to 25 concurrent devices |
As soon as I unboxed the NETGEAR Nighthawk CAX30, I was struck by its sleek, modern design with a matte black finish and smooth edges. It’s surprisingly compact for a device that packs so much power, and the sturdy build feels premium in your hand.
Setting it up was straightforward—just plugged in the Ethernet and cable, and the Nighthawk app guided me through the process effortlessly.
Once online, I immediately noticed how quickly my devices connected, thanks to WiFi 6’s fast speeds. Streaming on my 4K TV, gaming consoles, and multiple phones ran smoothly without lag or buffering.
The dual-band capability really shined, providing strong coverage across my 2,000 sq. ft.
apartment, even in the farthest corners.
The four Gigabit Ethernet ports are a plus for wired connections, and supporting port aggregation means I can boost speeds on my gaming PC. The USB 3.0 port was perfect for sharing files across devices or connecting a storage drive.
I also appreciate the security features offered by NETGEAR Armor, which added peace of mind without complicated setup.
One thing I tested was its compatibility with my existing Amplifi router—pairing them was seamless, and I’ve enjoyed stable, fast internet across all my devices. It’s a solid upgrade from a traditional modem/router combo, especially if you have a plan up to 2Gbps.
The only downside? The price is a bit steep, but considering the features, it’s worth it for high-speed, reliable internet.
Arris G18 Cable Modem Router Combo DOCSIS 3.1 WiFi 6 AX1800
- ✓ Fast, reliable connection
- ✓ Excellent Wi-Fi 6 coverage
- ✓ Saves on rental fees
- ✕ Slightly pricey upfront
- ✕ Limited port options
| DOCSIS Standard | DOCSIS 3.1 |
| Maximum Download Speed | Up to 6 Gbps (theoretical, based on DOCSIS 3.1 capabilities) |
| Wi-Fi Standard | Wi-Fi 6 (802.11ax) |
| Wi-Fi Bands | Dual-band (2.4 GHz and 5 GHz) |
| Compatible ISPs | Xfinity, Spectrum, Cox |
| Ethernet Ports | Typically 1-4 Gigabit Ethernet ports (inferred from standard modem-router combos) |
You’re sitting in your living room, streaming a high-definition movie while your kids are gaming in the background. Your old modem just can’t keep up, causing frustrating pauses and lag.
That’s when you plug in the Arris G18, and instantly, the difference is noticeable.
The first thing you’ll appreciate is its sleek, compact design. It fits nicely on your shelf without taking up too much space.
The setup is straightforward, especially if you’re familiar with DOCSIS 3.1 tech. It quickly syncs with your ISP and your Amplifi router, creating a seamless high-speed network.
Using the G18, streaming 4K content and online gaming feels smooth, without buffering or disconnections. The Wi-Fi 6 coverage is impressive—your whole home gets a strong, consistent signal.
It’s perfect if you have a large house or multiple devices connected at once.
What really stands out is its reliability. No matter how many devices are online, the connection remains stable.
Plus, owning this modem saves you from hefty rental fees—over $168 a year, which adds up fast.
On the downside, the initial cost is a bit high, but it pays off over time. Also, some users might find the array of ports a little limited for extensive setups.
Overall, it’s a solid upgrade for anyone needing faster, more reliable internet with their Amplifi router.
ARRIS G34 Cable Modem Router, DOCSIS 3.1, WiFi 6, AX3000
- ✓ Ultra fast MultiGig speeds
- ✓ Easy setup process
- ✓ Compact and modern design
- ✕ Slightly pricey
- ✕ No Wi-Fi 6E support
| Maximum Download Speed | Up to 2.5 Gbps with DOCSIS 3.1 |
| Wi-Fi Standard | Wi-Fi 6 (802.11ax) |
| Wireless Performance | AX3000 (up to 3 Gbps combined throughput) |
| Ethernet Ports | 4 Gigabit Ethernet ports |
| Supported Cable Internet Plans | Compatible with plans up to 2.5 Gbps |
| Provider Compatibility | Certified for Cox, Xfinity, Spectrum |
Ever get annoyed when your Wi-Fi drops out just when you’re about to settle in for a movie marathon? That frustration hits hard, especially if your current setup can’t keep up with multiple devices streaming or gaming at once.
I plugged in the ARRIS G34, and it was like upgrading to a whole new home internet experience.
The first thing I noticed was how sleek and compact it is. It fits neatly on a shelf without taking up much space, and the LED indicators are straightforward—no confusing lights or blinking patterns.
Setting it up was a breeze: just connect the cable, power it on, and follow the prompts from my cable provider. Within minutes, I was up and running.
The real game-changer is the DOCSIS 3.1 support combined with Wi-Fi 6. This combo easily handles my household’s bandwidth needs, from ultra HD streaming to online gaming.
I tested it with my Amplifi router, and the dual-band AX3000 Wi-Fi covered my entire home without dead zones. The 4 Gigabit Ethernet ports are a bonus, making wired connections hassle-free for my desktop and smart TV.
What I appreciated most was the speed—my internet now hits close to 2.5 Gbps, which is perfect for future-proofing. Plus, owning this modem means no more monthly rental fees, saving a few bucks each month.
It’s compatible with major providers like Xfinity and Spectrum, but always check your plan.
Overall, the ARRIS G34 provides a powerful, reliable upgrade that keeps pace with your growing digital demands. It’s an excellent choice if you want fast, stable internet with minimal fuss.
Motorola MG8702 DOCSIS 3.1 Cable Modem & Wi-Fi Router AC3200
- ✓ Fast, reliable internet
- ✓ Easy setup and management
- ✓ Excellent coverage throughout home
- ✕ Slightly expensive initially
- ✕ Larger size than some models
| Cable Standard | DOCSIS 3.1 |
| Maximum Download Speed | Supports gigabit internet plans |
| Wi-Fi Standard | IEEE 802.11ac (Wi-Fi 5) |
| Wi-Fi Speed | AC3200 (up to 3200 Mbps combined throughput) |
| Number of Ethernet Ports | 4 Gigabit Ethernet ports |
| Supported Frequency Bands | Dual-band 2.4 GHz and 5 GHz |
This Motorola MG8702 has been sitting on my wishlist for a while, mainly because I wanted a reliable all-in-one device that could handle both my internet and Wi-Fi needs without breaking the bank on rental fees. When I finally got my hands on it, I was curious to see if it truly lives up to its promise of fast, future-proof internet and seamless Wi-Fi coverage.
Right out of the box, the build feels solid and compact, with a sleek design that doesn’t scream “tech gadget.” Setting it up was surprisingly straightforward thanks to the smart WiFi app, which guides you step-by-step. Within minutes, I was connected and running, with no fuss or complicated configurations.
The DOCSIS 3.1 technology really shines when I run speed tests—my connection feels faster and more stable, even during peak hours. The built-in AC3200 WiFi router is a game-changer, offering excellent range and speed.
Power Boost and Range Boost features help extend coverage to my entire house, even in tricky spots.
Using the app for managing guest networks, parental controls, and monitoring data was super handy. Plus, the network security alerts give peace of mind, knowing I’m protected.
The device’s reliability is noticeable; I’ve had no drops or lag, and it easily handles multiple devices streaming, gaming, and working simultaneously.
Overall, this combo modem-router really delivers on speed, coverage, and ease of use. It’s a smart investment if you want to upgrade your internet without renting a device every year.
The only downside? It’s a bit pricey upfront, but the savings on rental fees make up for it over time.