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expired Posted by phoinix | Staff • Jan 22, 2024
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expired Posted by phoinix | Staff • Jan 22, 2024

ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem

+ Free Shipping

$129

$156

17% off
Amazon
59 Comments 24,560 Views
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Deal Details
Amazon has ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem on sale for $129. Shipping is free.

Thanks to Community Member phoinix for finding this deal.

Features:
  • The SURFboard S33 features a 2.5 Gbps Ethernet port plus an additional 1 Gbps Ethernet port for a 2nd network
  • Cable internet service required. Does NOT include Wi-Fi and does not support cable digital voice service.
  • DOCSIS 3.1 Cable Modem approved for cable internet speed plans up to 2.5 Gbps
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels, 2 downstream x 2 upstream OFDM DOCSIS 3 1 channels
  • Connects to any existing Wi-Fi router for blazing-fast internet.
  • Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others.
  • Stop renting your modem and save on monthly modem rental fees!
  • Sleek new, modern design fits nicely into home or office

Editor's Notes

Written by citan359 | Staff
  • About this deal:
    • This offer is $21 less than the previous Frontpage Deal which received +37 votes form the community.
  • About this product:
    • Rating of 4.4 stars overall from over 3,100 Amazon customer reviews.
  • About this store:

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem on sale for $129. Shipping is free.

Thanks to Community Member phoinix for finding this deal.

Features:
  • The SURFboard S33 features a 2.5 Gbps Ethernet port plus an additional 1 Gbps Ethernet port for a 2nd network
  • Cable internet service required. Does NOT include Wi-Fi and does not support cable digital voice service.
  • DOCSIS 3.1 Cable Modem approved for cable internet speed plans up to 2.5 Gbps
  • 32 downstream x 8 upstream DOCSIS 3.0 bonded channels, 2 downstream x 2 upstream OFDM DOCSIS 3 1 channels
  • Connects to any existing Wi-Fi router for blazing-fast internet.
  • Compatible with major U.S. Cable Internet Providers including Cox, Spectrum, Xfinity & others.
  • Stop renting your modem and save on monthly modem rental fees!
  • Sleek new, modern design fits nicely into home or office

Editor's Notes

Written by citan359 | Staff
  • About this deal:
    • This offer is $21 less than the previous Frontpage Deal which received +37 votes form the community.
  • About this product:
    • Rating of 4.4 stars overall from over 3,100 Amazon customer reviews.
  • About this store:

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+24
Good Deal
Visit Amazon

Price Intelligence

Model: ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Xfinity, Cox, Spectrum & More | 1 & 2.5 Gbps Ports | 2.5 Gbps Max Internet Speeds | 4 OFDM Channels | 2 Year Warranty

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
06/03/23Amazon$145
10
05/23/23Amazon$154
0
03/17/23Amazon$150 frontpage
65
03/12/23Amazon$157
4
11/15/22Amazon$147 frontpage
142
11/19/21Amazon$150
0
09/06/21Amazon$170
1
08/23/21Amazon$149 frontpage
92
08/09/21Amazon$170
5
07/19/21Amazon$170 frontpage
89
06/21/21Amazon$149 frontpage
24
Show More

Current Prices

Sort: Lowest to Highest | Last Updated 6/27/2025, 12:00 AM
Sold By Sale Price
Amazon$189

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Top Comments

rmuehler
56 Posts
86 Reputation
From my understanding XFinity/Comcast has been increasing upload speeds in some areas. If you got an email it probably means your area. For increased upload speed you need an OFDMA compatible device like the CODA56. S33 will currently not work if you want increased upload speeds.

List of devices compatible with "Next Gen Speed Tier". [xfinity.com] Again, this only applies if you got an email about increased upload speeds

Edit: If you don't mind 35mbps upload cap or you're not on a plan that would even get you enhanced upload speeds this modem still works great for Xfinity/Comcast.
happygooddeal
6183 Posts
550 Reputation
I have this modem but Comcast keep emailing me to upgrade modem. I have 1ghz plan.
pechango
2030 Posts
237 Reputation
You shouldn't be getting charged for those tech visits. Ask for a supervisor if you're dealing with someone over the phone.

250mbps on a 1gbps plan is a line issue, not a modem issue. Likely a splitter or cable run that has gone bad. they should be able to see signal at the tap and node without having to visit your house first. If all of those are fine, then you should be testing speeds AT THE MODEM. Not your PC or anything post modem, at your modem. That's all they have to supply. Anything past that is your responsibility.

58 Comments

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Jan 22, 2024
627 Posts
Joined Dec 2014
Jan 22, 2024
jnick831
Jan 22, 2024
627 Posts
Looks like Amazon boosted the price to $155.99
Jan 22, 2024
37 Posts
Joined Mar 2021
Jan 22, 2024
FantasticSink6866
Jan 22, 2024
37 Posts
Been using this modem for a year or so. No complaints for me. I've had several power outages and no tinkering needed to get my router working again except for one time where I unplugged power and plugged back in. Comcast in general has been great even though they sometimes price gouge if no local competition.
Jan 22, 2024
1,255 Posts
Joined Nov 2007
Jan 22, 2024
brestbry
Jan 22, 2024
1,255 Posts
Quote from nin7474 :
Both of my Switch and Router support multigig speed but I get around 500-600 DL still
Do a speed test when connected to the modem directly via ethernet cable, to rule out if the issue is your modem or your router.
Jan 22, 2024
33 Posts
Joined Oct 2023
Jan 22, 2024
FancyClass417
Jan 22, 2024
33 Posts
Quote from rmuehler :
From my understanding XFinity/Comcast has been increasing upload speeds in some areas. If you got an email it probably means your area. For increased upload speed you need an OFDMA compatible device like the CODA56. S33 will currently not work if you want increased upload speeds.

List of devices compatible with "Next Gen Speed Tier". [xfinity.com] Again, this only applies if you got an email about increased upload speeds

Edit: If you don't mind 35mbps upload cap or you're not on a plan that would even get you enhanced upload speeds this modem still works great for Xfinity/Comcast.
Is this why my 1gb plan says upload up to 100MB but im averaging 25MB? I have s33
Jan 22, 2024
322 Posts
Joined Nov 2014
Jan 22, 2024
jinjuice
Jan 22, 2024
322 Posts
I've been using one since June 2022 with Cox, these run really hot My room does get up to high 80s in the summer here in Vegas, so I have a 120mm computer fan pointed at it. I tried a Motorola one previously which runs cooler but didn't work with Cox.
Jan 22, 2024
56 Posts
Joined Nov 2014
Jan 22, 2024
rmuehler
Jan 22, 2024
56 Posts
Quote from FancyClass417 :
Is this why my 1gb plan says upload up to 100MB but im averaging 25MB? I have s33
Yes, you won't get past 25mbps without one of the listed compatible modems. I think they are still worming to get more modems added. I switched from S33 to CODA56 for that reason. Getting around 240 mbps now which was much needed for the Plex server I host.
Jan 22, 2024
33 Posts
Joined Oct 2023
Jan 22, 2024
FancyClass417
Jan 22, 2024
33 Posts
Quote from rmuehler :
Yes, you won't get past 25mbps without one of the listed compatible modems. I think they are still worming to get more modems added. I switched from S33 to CODA56 for that reason. Getting around 240 mbps now which was much needed for the Plex server I host.
Which modem are you using?

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Jan 22, 2024
56 Posts
Joined Nov 2014
Jan 22, 2024
rmuehler
Jan 22, 2024
56 Posts
Quote from FancyClass417 :
Which modem are you using?
Hitron CODA56. It's around the same price as the S33 and also has the 2.5G port.
Jan 22, 2024
374 Posts
Joined Nov 2014
Jan 22, 2024
JasonB7619
Jan 22, 2024
374 Posts
Back to 155 now
Jan 22, 2024
1,177 Posts
Joined Oct 2008
Jan 22, 2024
California-Boy
Jan 22, 2024
1,177 Posts
Price increased to $155.99
Jan 22, 2024
33 Posts
Joined Oct 2023
Jan 22, 2024
FancyClass417
Jan 22, 2024
33 Posts
Quote from rmuehler :
Hitron CODA56. It's around the same price as the S33 and also has the 2.5G port.
Not familiar with this brand, do you recommend?
Jan 22, 2024
147 Posts
Joined Oct 2017
Jan 22, 2024
LovePotion9
Jan 22, 2024
147 Posts
Quote from Sarisin48 :
I hate to make another me too post, but I have had this modem for close to three years after upgrading to the gigabit service from Xfinity. I don't come close to get 1gb down (usually around 250mb). I have had several of their techs out and they blame the slow speed on everything non-Xfinity (PC, modem, cables, ethernet card, etc.). They have not been able to get me the speed I pay for and their tech visits which are a joke cost $75 each. I am currently trying the Tmobile $50/mo 5G internet and it is really hit or miss. At least Xfinity has been steady for me with no disconnects, etc. Slow, but steady.

Back on topic, I tried both this modem and the SB 8200 as they were about the same price at the time and this was faster for me.
I have exact same problem. If you have an Asus router and the option QoS is turn on, the max download from your router to PC is 700mb or less even if you set 100% with QoS. And even though ping TTL against nearest comcast server showing great. This issue is with Asus router only, not sure for other brands but could definitely try.

I did a test with PC connected straight to modem bypassing Asus router and I am getting full 1gb as advertise and ping TTL is excellent.

So after turning off QoS, all wired PC is now getting full 1gb.
Jan 22, 2024
2,030 Posts
Joined May 2011
Jan 22, 2024
pechango
Jan 22, 2024
2,030 Posts
Quote from rmuehler :
Yes, you won't get past 25mbps without one of the listed compatible modems. I think they are still worming to get more modems added. I switched from S33 to CODA56 for that reason. Getting around 240 mbps now which was much needed for the Plex server I host.
They're likely awaiting a new firmware to enable this because there is nothing technically preventing the S33 from getting the new mid/high split speeds. Likely Arris sitting on their hands until it is needed.
Jan 22, 2024
30 Posts
Joined Nov 2017
Jan 22, 2024
hamu313
Jan 22, 2024
30 Posts
Quote from LovePotion9 :
I have exact same problem. If you have an Asus router and the option QoS is turn on, the max download from your router to PC is 700mb or less even if you set 100% with QoS. And even though ping TTL against nearest comcast server showing great. This issue is with Asus router only, not sure for other brands but could definitely try.

I did a test with PC connected straight to modem bypassing Asus router and I am getting full 1gb as advertise and ping TTL is excellent.

So after turning off QoS, all wired PC is now getting full 1gb.
I had the exact same problem and turning off QoS on the ASUS router, the max download just bumped up to the full 1gb down (was only 300mb). Thank you!!

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Jan 22, 2024
640 Posts
Joined Aug 2011
Jan 22, 2024
roll_right
Jan 22, 2024
640 Posts
Quote from FancyClass417 :
Not familiar with this brand, do you recommend?
It's okay, with caveats. Some people have had issues with dropped packets since there were a glut of purchases when it was approved for Comcast mid-split. It could just be a normal amount of lemons and since there was such high volume it was more noticeable. The biggest issue is there isn't an easily accessible admin portal for the Hitron CODA models. You have to have a router capable of doing some advanced config and make some changes with advanced knowledge of how to do so.

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