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9 facts in comparison
ARRIS SURFboard G54 vs ARRIS SURFboard G18
The two ends of the SURFboard range, and a comparison worth having only because the model numbers hide how far apart they are. Both are DOCSIS 3.1 cable modems with a router built in, both exist so that you can stop renting a gateway from your cable company, and that is where the similarity stops.
The G54 is the flagship. It negotiates a multi-gig plan at 2.5 Gbps, pairs that with quad-band Wi-Fi 7, and puts five Ethernet ports on the back, including multi-gig, so a fast plan reaches a fast desktop without a switch. The G18 is the entry model: a gigabit plan, dual-band Wi-Fi 6, and two gigabit ports, which is enough for a television and one computer.
The temptation is to buy the G54 as future-proofing. The honest question is whether the cable plan will ever exceed a gigabit, because the modem cannot make the connection faster than the service. On a gigabit plan the two download at the same rate, and the G54's advantages shrink to its Wi-Fi 7 radios and its port count - which are real advantages in a busy house, and irrelevant in a small flat.
What both share is the limitation of every modem-router combination: the router side ages faster than the modem side, and you replace both at once. The G18's Wi-Fi 6 will feel dated sooner than its DOCSIS 3.1 does.
The G54 is the right buy for a household on a multi-gig plan, or one that would rather buy once and not think about it. The G18 is the right buy for a gigabit-or-slower plan in a home with modest Wi-Fi needs, with the saving spent elsewhere - or on a separate router later.
Head-to-head points: every spec is scaled between these products only, so a product can score high here and modestly on its own page, where the VS Score measures it against the median of its class.
Where the ARRIS SURFboard G54 beats the ARRIS SURFboard G18
- A much higher max download speed ?2,500 Mbps vs 1,000 Mbps
- More ethernet ports ?5 vs 2
- Has Multi-gig Ethernet ?
Where the ARRIS SURFboard G18 beats the ARRIS SURFboard G54
No standout advantages.
Key real-world differences
The spec sheet pulls in both directions. These are the gaps big enough to shape the decision — with the actual figures, and what each one means in real-world use.
- Max download speedPerformance2,500 Mbps vs 1,000 Mbps — 2.5× more for the ARRIS SURFboard G54
The fastest internet plan the modem can support.
- Multi-gig EthernetConnectivityYes vs No — only the ARRIS SURFboard G54 has it
A port faster than 1 Gbps for multi-gig cable plans.
- Ethernet portsConnectivity5 vs 2 — 2.5× more for the ARRIS SURFboard G54
The number of wired Ethernet ports.
Which one should you buy?
There is no single answer — it depends on what you will actually use it for. Match your priority to the pick below.
- Best for performance ARRIS SURFboard G54 takes the category 100 to 62 — driven by max download speed (2,500 Mbps vs 1,000 Mbps).
- Best for connectivity ARRIS SURFboard G54 takes the category 100 to 0 — driven by Multi-gig Ethernet (Yes vs No).
- The safe all-rounder ARRIS SURFboard G54 wins 2 of 3 categories and tops the overall VS Score at 100.
Where each one falls short
ARRIS SURFboard G54
- No major spec weaknesses in this matchup — the gaps that exist are small.
- 4 specs are unreported (shown as Unknown) and excluded from its scores.
ARRIS SURFboard G18
- Max download speed: 2,500 Mbps vs 1,000 Mbps
- Multi-gig Ethernet: Yes vs No
- Ethernet ports: 5 vs 2
- 4 specs are unreported (shown as Unknown) and excluded from its scores.
What matters to you?
Drag the sliders to weight each category and re-rank the products to suit your priorities.
Score breakdown
Performance
Connectivity
Features
Design
Specs last verified October 11, 2026ARRIS SURFboard G54: 9 of 13 specs verified (69%)ARRIS SURFboard G18: 9 of 13 specs verified (69%)Unverified specs show as Unknown — never estimated, never scored
What reviewers say
The bottom line
The ARRIS SURFboard G54 is the clear winner, scoring 100 to 53 on our VS Score. It leads on Performance and Connectivity.
