ARRIS (G20) – Cable Modem Router Combo – Fast DOCSIS 3.1 Multi-Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1.0 Gbps Max Speeds, Next-Generation Upload Optimized
Original price was: €249.€224Current price is: €224.
Price: $249.00 - $223.63
(as of Jul 28, 2025 01:46:34 UTC – Details)
The SURFboard G20 DOCSIS 3.1 Wi-Fi 6 cable modem uses the latest technology to deliver faster download and upload speeds, all in a single device. The DOCSIS 3.1 functionality supports gig-speed cable internet plans. Powered by Wi-Fi 6 (802.11ax) technology on every radio, the SURFboard G20 delivers faster Wi-Fi speeds and greater range than the previous generation of Wi-Fi. Plus, with next-generation upload speed optimization, the G20 can achieve upstream speeds up to 450 Mbps, enabling worry-free video conferencing and ultra-fast data uploads.
A Trusted Name in Home Connectivity: Get high speeds, low latency, and a two-in-one product. With the ARRIS SURFboard G20 Wi-Fi Cable Modem, you will increase your network capability and get ultra-fast streaming, downloading and uploading throughout your home. From a trusted brand with over 260 million modems sold and growing.
Save Money: Own your modem and save. Reduce your cable bill up to 180 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
Modem Technology: DOCSIS 3.1 is the latest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming and enables multi-gig networking.
Next Generation Upload Speed Optimized: Switchable upstream filters to support optimized upload service tiers (provider dependent).
Simple and Secure Set-up: Just plug-in, download the SURFboard Central App, and follow the step-by-step intrstuctions to activate the modem, set-up and customize your Wi-Fi network, and add devices to your home network. Once setup is complete, the app provides real-time monitoring of the devices on your network, enhanced parental controls like setting time limits and pausing internet and much more.
Plus, with next-generation upload speed optimization, the G20 can achieve upstream speeds up to 450 Mbps, enabling worry-free video conferencing and ultra-fast data uploads.
Customers say
Customers report that the cable modem works well with Comcast and Xfinity, delivering high internet capacity speeds, and is easy to set up with thorough directions. The modem’s performance receives mixed feedback – while some find it reliable with solid signal, others report weak signals and connectivity issues. Moreover, customers disagree on the modem’s value for money, with some finding it good value while others consider it not worth the cost. Additionally, the modem’s reliability is mixed, with some reporting it runs strong while others need to restart it about every two weeks. Compatibility is also mixed, with some finding it compatible with their internet provider while others report issues with Comcast activation.
4 reviews for ARRIS (G20) – Cable Modem Router Combo – Fast DOCSIS 3.1 Multi-Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1.0 Gbps Max Speeds, Next-Generation Upload Optimized
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Original price was: €249.€224Current price is: €224.
SeekingTraveler –
Quick, easy installation on Spectrum; huge speed increase; replace Cat5 cables with Cat5e or higher
This is a review of the ARRIS (SB8200) – Cable Modem.Tip: Before selecting a new cable modem, go to the website of your ISP and review their list of “approved” cable modems. You could also call your ISP to find an “approved” modem. Your ISP may prefer that you to use one of their modems. Sometimes their modems are provided at no additional cost, so you might be able to save some money. I verified that this Arris SB8200 cable modem was on the “approved” list for my local ISP (Spectrum). While I am very happy with the Arris SB8200, you might consider finding an “approved” modem that has come out more recently (a newer model).Short review: I recently replaced my 10-year-old cable modem with the Arris SB8200 modem. I am on a 400 Mbps (megabit per second) plan with Spectrum, but I was only getting 90 Mbps. With the new modem, internet speed more than quadrupled (to 480 Mbps). I am quite pleased. I have read reviews by people who claimed to have had bad experiences using this modem on a Sprectrum system, but I had no problem whatsoever. Installation and activation were very easy and quick. The self-installation via the web did not work for me, but I easily activated the new modem with a quick phone call with Spectrum (no wait on phone; less than 10 minutes to activate). I discovered some problems with my home network that I discuss below, but these were completely unrelated to the new Arris modemHave MAC ID (from box or modem label) before you activate: You must report the MAC ID for the new modem to your ISP to activate, so have it handy before you start.Important Tip: The rest of this review concerns internet speed issues from causes other than the modem. The most important lesson learned: Make sure you replace all your old-style Cat5 Ethernet cables with newer Cat5e or Cat6 cables. Cat5 cables are limited to 100 Mbps (megabits per second) and may be âbottleneckingâ your system.My system: My home was built with an Ethernet system that supplies at least one Ethernet outlet in every room. I have been using Ethernet instead of WiFi. The Cat5e Ethernet cables supplying this system come together in a central distribution box, which houses the cable modem and a router. In some rooms, Ethernet switches (splitters) are used to share an Ethernet outlet among several devices. Of course, internet speed may drop due to any of these components.Before installation:– Studied the Quick Start/Installation guide (available online) before modem arrived.– Watched a 4-minute Sprectrum video on how to install a new cable modem.– Learned what the various lights on the modem mean (including solid and flashing lights).Cable modem installation with Spectrum:Note: For this installation, Spectrum service was already established (on old modem).– Turned off computer– Connected modem directly to computer with a new Ethernet cable (Cat5e), bypassing router and home Ethernet system– Turned on modem: Based on behavior of lights, modem appeared to update its firmware (automatically). After about 6 minutes, lights indicated modem was ready.– Turned on computer: Opened web browser and attempted to go to the Spectrum self-install web page. Would not connect.– Called Sprectrum to activate modem: Gave the MAC ID of new modem to pleasant costumer service rep. After updating the MAC ID, rep remotely reset modem.– Ran speed test: Speed had been 90 Mbps with old modem, it was over 400 Mbps with new modem. (Glory be!)Lessons learned about homeâs Ethernet system:– After the modem had been activated, I moved it into the Ethernet cable distribution box and hooked it up to the old router. Ethernet speed was only 90 Mbps, just like when using the old modem. Hmmm.– Installed the new router, Ethernet speed was still only 90 Mbps. Hmmm.– Turned on WiFi and connected computer via WiFi: Speed jumped to over 400 Mbps. Great!– Turned off WiFi to test Ethernet system. The switches/splitters are gigabit rated, so I hoped they were not the cause of the “bottlenecking.”– Replaced all the Ethernet cables with new Cat5e cables: Ethernet speed jumped to 480 Mbps. Problem solved!– Besides higher internet speeds for the computers, Youtube videos on the television are much, much improved. Very pleased.Summary: Your new Arris modem may (by itself) enable you to get much higher internet speeds. However, make sure all of your network gear (router, switches/splitters, and cables) can support 1 Gbps (gigabit per second). For example, if you have Cat5 cable anywhere in your system, your speed will be limited to 100 Mbps, so replace them with Cat5e or higher cables.
Vivek –
Totally worthwhile Upgrade from Arris 6141
Used on Xfinity broadband after checking that it was compatible on their website. My service was being limited by the modem (Arris 6141) to 300mbps. Decided to replace it with this one Arris 8200V3 (I didn’t know it was V3 till I opened the box) Downloaded the Xfinity app on my phone, disconnected the old model. Plugged in the new one. Followed the instructions on the phone app to add a new modem. It took a while doing its thing.I had my ASUS router plugged in. Did not work the first time around. Gave an error message, but App gave me the option to retry. Which I did.This time I unplugged the router. It takes a while.The power light goes off then back on, then flashes, becomes steady. Same happened with the other lights. Finally all 4 lights were steady. Waited for another 5 mins while the app still said “Finalizing….” Ran out of patience and plugged in the router. Miraculously, the app said, modem is restarting to enable wifi. But I think the Wifi immediately started working since I didn’t see the modem reboot.Overall a smooth easy setup despite my trepidation. Tested the speed and it was a blazing 650mbps on the ethernet and over 150mbps on the wifi.
CY –
Smooth and quick installation
I purchased the SB8200 to replace a rental modem. The installation was very smooth. I just unplug the rental unit and plug in the new one, and called my ISP (RCN/Astound) to activate. Every thing runs same as before. I have two routers and they are connected to the two Ethernet ports. Each router has its own IP.
Anon m –
NEVER will I buy another ARRIS Modem EVER AGAIN!
I made a mistake just about 2 years, 3.5 months ago, and one that I never intend to make again. I was an idiot, because in 2015, I purchased an ARRIS surfboard, and were it not for the updated tech inside, one would never know the difference between that one, and the one on which I made this mistake. That one DIED in approximately 2 years’ time as well, and while I could go find out exactly how long it lasted, I won’t. ARRIS isn’t worth any more of my time. BTW, I might add that I am an IT professional in the industry for about 25 years, so I know what I’m talking about.So, 2 years, 3.5 months ago almost to the day, I purchased this modem – my existing modem at the time, a different brand, the one I had purchased to replace the PREVIOUS ARRIS that DIED way too soon – was still working, but I discovered quite by accident that my 7 letter internet provider had quietly upgraded my access, charging me more, and I needed a DocSys 3.1 to take advantage of those new speeds that I was already paying for. So, I checked the reviews at multiple sites, like I imagine most of us do, and went ahead and ordered this ARRIS, forgetting the past temporarily.Over the past couple of months, I’ve had my internet access go down suddenly, and considering I require my access for work, that was no bueno! Fast forward to this evening, and after more frequent outages, tonight this ARRIS DIED. So, I grabbed one of the two older modems that I had lying around there (see, told you, IT industry) and hooked the first one up… but, I couldn’t restore my service. THAT was the previous ARRIS Surfboard that I had replaced. Then, I grabbed the other one – NOT an ARRIS – plugged it in, reconfigured my provider’s access info yet again, and bam! 15 minutes later, I’m back online. Mind you, It’s a DocSys 3.0 modem, so my speeds are slower, but, that replacement modem STILL WORKS. OH! BTW, I used it for 4 years! It was also in the same price point as the ARRIS modems when I purchased them.The moral of the story? Take it from an IT guy – DO NOT BUY ARRIS MODEMS! EVEN IF ALL THE REVIEWS TELL YOU THEY ARE THE “best” – because they are clearly INFERIOR, with PLANNED OBSOLESCENCE! They appear to me, to be DESIGNED, to DIE JUST FAR ENOUGH OUT OF WARRANTY that you can’t contact them and say “This device JUST went out of warranty and I want it replaced!” Look for a more reliable brand. Even if it takes a little longer to arrive, or costs a little bit more. It’s HIGH TIME we consumers show companies like ARRIS, that we’re not going to tolerate their crap, and we’re not going to be forced to purchase “extended warranty” coverage, when the device should normally last much longer than the warranty period. It’s better for our planet, better for our pocketbook, and we need to combat the “planned obsolescence” that so many companies want to bake into their products because they’re greedy and want to force us to purchase new products from them more frequently.The two old ARRIS modems that I now have are going to the recycling center, and I will make myself a note in my master list of brand names to avoid, NEVER to purchase an ARRIS again!