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  1. Home
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ARRIS SURFboard G20 vs SURFboard G18

Which Router Is Better?

    Top
    Main Differences
    Design
      DimensionsNetwork PortsUSB PortsIn The BoxWall/Ceiling Mount
    Wi-Fi
      Interior Short RangeInterior Long RangeWireless LatencyMesh Satellite Wireless LatencyWi-Fi SpecificationsMLO Implementation
    Wi-Fi Coverage
      Indoor Coverage - Same StoryIndoor Coverage - 1 Story AboveBroad Coverage
    Comments

Products

ARRIS SURFboard G20
ARRIS SURFboard G18

Tested using Methodology v0.9.1

Updated Jun 17, 2026 05:20 PM

SEE PRICE
BestBuy.com

Tested using Methodology v0.9.1

Updated Jun 17, 2026 05:20 PM

SEE PRICE
Amazon
ARRIS SURFboard G20 Picture

Track

ARRIS SURFboard G18 Picture

Track

Type
Router/Modem Combo
Multi Band
Dual Band (2.4 / 5)
Wi-Fi Version
Wi-Fi 6 (ax)
Type
Router/Modem Combo
Multi Band
Dual Band (2.4 / 5)
Wi-Fi Version
Wi-Fi 6 (ax)
  1. Recommended in 1 article:
  2. Cable Modem-Router Combos
  1. Recommended in 1 article:
  2. Cable Modem-Router Combos

Our Verdict

ARRIS SURFboard G20

ARRIS SURFboard G18

The ARRIS SURFboard G20 sits alongside the ARRIS SURFboard G18 in ARRIS' lineup of DOCSIS 3.1 modem/router combos, with the same compact design, Wi-Fi 6 standard, and limited two-port gigabit wired connectivity. Despite an identical appearance, the G20 offers modest improvements across the board with faster top speeds, a wider range, and lower latency. While the G20 has the edge overall, its advantages over the G18 are fairly incremental. It's also worth noting that neither model supports mesh expansion.

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Variants

  • SURFboard G20 (Black)
  • SURFboard G18 (Black)

Review

See ARRIS SURFboard G20 Review
See ARRIS SURFboard G18 Review
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0 

Check Price

Black
SURFboard G20
SEE PRICE
BestBuy.com
Black
SURFboard G18
SEE PRICE
Amazon
Black
SURFboard G20
SEE PRICE
Amazon
Black
SURFboard G18
SEARCH
B&H
Black
SURFboard G20
SEARCH
B&H
Black
SURFboard G18
SEARCH
BestBuy.com
Black
SURFboard G20
SEE PRICE
ARRIS
Black
SURFboard G18
SEE PRICE
ARRIS
Black
SURFboard G20
SEARCH
Walmart.com
Black
SURFboard G18
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Walmart.com

Main Differences for
Apartment/Condo

Threshold 

0.10

Apartment/Condo 
 

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Full Comparison

Design

Dimensions 
 

N/A
N/A

Dimensions Photo  

ARRIS SURFboard G20 Dimensions Photo Sample

SAMPLE

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ARRIS SURFboard G18 Dimensions Photo Sample

SAMPLE

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Height 
 

Lock" (Lock cm)
Lock" (Lock cm)

Width 
 

Lock" (Lock cm)
Lock" (Lock cm)

Depth 
 

Lock" (Lock cm)
Lock" (Lock cm)

Depth With Cables 
 

Lock" (Lock cm)
Lock" (Lock cm)

Network Ports 
 

N/A
N/A

Ports Photo  

ARRIS SURFboard G20 Ports Photo Sample

SAMPLE

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ARRIS SURFboard G18 Ports Photo Sample

SAMPLE

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WAN Port Speed 
 

Lock Gbps
Lock Gbps

LAN Port Count 
 

Lock
Lock

10 Gbps Ports 
 

Lock
Lock

2.5 Gbps Ports 
 

Lock
Lock

1 Gbps Ports 
 

Lock
Lock

10 Gbps Ports (SFP+) 
 

Lock
Lock

USB Ports 
 

USB-A 3.0 Ports 
 

Lock
Lock

USB-A 2.0 Ports 
 

Lock
Lock

USB-C Ports 
 

Lock
Lock

USB-C Speed 
 

N/A
N/A

In The Box 
 

In The Box Photo  

ARRIS SURFboard G20 In The Box Photo Sample

SAMPLE

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for pictures & test results

ARRIS SURFboard G18 In The Box Photo Sample

SAMPLE

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for pictures & test results

Wall/Ceiling Mount 
 

N/A
N/A

Mount Photo  

ARRIS SURFboard G20 Mount Photo Sample

SAMPLE

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ARRIS SURFboard G18 Mount Photo Sample

SAMPLE

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for pictures & test results

Mount Type 
 

Locked
Locked
Wi-Fi

Interior Short Range 
 

N/A
N/A

Short Range Graph  

ARRIS SURFboard G20 Short Range Graph Sample

SAMPLE

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for pictures & test results

ARRIS SURFboard G18 Short Range Graph Sample

SAMPLE

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for pictures & test results

Highest Speed 
 

Lock Mbps
Lock Mbps

Average 5GHz Speed 
 

Lock Mbps
Lock Mbps

Average 6GHz Speed 
 

N/A
N/A

Test Configuration 
 

Locked
Locked

Interior Long Range 
 

N/A
N/A

Long Range Graph  

ARRIS SURFboard G20 Long Range Graph Sample

SAMPLE

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ARRIS SURFboard G18 Long Range Graph Sample

SAMPLE

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for pictures & test results

Lowest Speed 
 

Lock Mbps
Lock Mbps

Average 5GHz Speed 
 

Lock Mbps
Lock Mbps

Average 6GHz Speed 
 

N/A
N/A

Test Configuration 
 

Locked
Locked

Wireless Latency 
 

N/A
N/A

Latency Cumulative Distribution Function 
 

ARRIS SURFboard G20 Latency Cumulative Distribution Function Sample

SAMPLE

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for pictures & test results

ARRIS SURFboard G18 Latency Cumulative Distribution Function Sample

SAMPLE

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for pictures & test results

5GHz Median Latency 
 

Lock ms
Lock ms

5GHz Median Jitter 
 

Lock ms
Lock ms

6GHz Median Latency 
 

N/A
N/A

6GHz Median Jitter 
 

N/A
N/A

Mesh Satellite Wireless Latency 
 

N/A
N/A

Satellite Latency Cumulative Distribution Function 
 

ARRIS SURFboard G20 Satellite Latency Cumulative Distribution Function Sample

SAMPLE

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for pictures & test results

ARRIS SURFboard G18 Satellite Latency Cumulative Distribution Function Sample

SAMPLE

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for pictures & test results

Satellite 5GHz Median Latency 
 

N/A
N/A

Satellite 5GHz Median Jitter 
 

N/A
N/A

Satellite 6GHz Median Latency 
 

N/A
N/A

Satellite 6GHz Median Jitter 
 

N/A
N/A

Wi-Fi Specifications 
 

N/A
N/A

Type 
 

Locked
Locked

Multi Band 
 

Locked
Locked

DFS Channels 
 

Locked
Locked

6GHz Band 
 

Locked
Locked

Wi-Fi Version 
 

Locked
Locked

MU-MIMO 
 

Locked
Locked

OFDMA Support 
 

Locked
Locked

Beamforming 
 

Locked
Locked

Tested Firmware Version  

Locked
Locked

MLO Implementation 
 

Beacon Frame  

ARRIS SURFboard G20 Beacon Frame Sample

SAMPLE

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for pictures & test results

ARRIS SURFboard G18 Beacon Frame Sample

SAMPLE

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for pictures & test results

MLO Support  

Locked
Locked

EMLSR/EMLMR Support 
 

Locked
Locked

Max Number Of Simultaneous Links 
 

Locked
Locked

TID-To-Link Mapping Negotiation Support 
 

Locked
Locked
Wi-Fi Coverage

Indoor Coverage - Same Story 
 

Wi-Fi Coverage Map  

ARRIS SURFboard G20 Wi-Fi Coverage Map Sample

SAMPLE

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for pictures & test results

ARRIS SURFboard G18 Wi-Fi Coverage Map Sample

SAMPLE

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for pictures & test results

Indoor Coverage - 1 Story Above 
 

Wi-Fi Coverage Map  

ARRIS SURFboard G20 Wi-Fi Coverage Map Sample

SAMPLE

Join Now

for pictures & test results

ARRIS SURFboard G18 Wi-Fi Coverage Map Sample

SAMPLE

Join Now

for pictures & test results

Wi-Fi Coverage Map (Dual Mesh)  

ARRIS SURFboard G20 Wi-Fi Coverage Map (Dual Mesh) Sample

SAMPLE

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for pictures & test results

ARRIS SURFboard G18 Wi-Fi Coverage Map (Dual Mesh) Sample

SAMPLE

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for pictures & test results

Broad Coverage 
 

Outdoor Coverage Map  

ARRIS SURFboard G20 Outdoor Coverage Map Sample

SAMPLE

Join Now

for pictures & test results

ARRIS SURFboard G18 Outdoor Coverage Map Sample

SAMPLE

Join Now

for pictures & test results

Check Price

Black
SURFboard G20
SEE PRICE
BestBuy.com
Black
SURFboard G18
SEE PRICE
Amazon
Black
SURFboard G20
SEE PRICE
Amazon
Black
SURFboard G18
SEARCH
B&H
Black
SURFboard G20
SEARCH
B&H
Black
SURFboard G18
SEARCH
BestBuy.com
Black
SURFboard G20
SEE PRICE
ARRIS
Black
SURFboard G18
SEE PRICE
ARRIS
Black
SURFboard G20
SEARCH
Walmart.com
Black
SURFboard G18
SEARCH
Walmart.com
Back to Top

ARRIS SURFboard G20

ARRIS SURFboard G18

Comments

  1. Comparison
 • Posted 1 month ago

ARRIS SURFboard G20 vs ARRIS SURFboard G18: Main Discussion

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