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forum threadsd69 posted Today 05:07 PM
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forum threadsd69 posted Today 05:07 PM

NETGEAR CM3000-100NAR Nighthawk CM3000 DOCSIS 3.1 Mid/high-Split Cable Modem, Up to 2.5Gbps, Black - Certified Refurbished $159.98

$160

$300

46% off
Amazon
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I've been searching for a Mid/High Split cable modem to increase my upload speed on Xfinity. I almost went with the Hitron CODA56 but people are still complaining about the Puma 7 chipset. My other consideration was the Arris S34 but again people had issues. The CM3000 seems the most reliable but also the most expensive. This refurb from Amazon is almost half the cost of new and it has 90 day return policy.

https://www.amazon.com/dp/B0F3FXYWJS

Xfinity modems: https://assets.xfinity.com/assets...evices.pdf

Issues with Puma 7 chipset: https://www.modemguides.com/blogs...VSeOJdS3QX
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Community Notes
About the Poster
I've been searching for a Mid/High Split cable modem to increase my upload speed on Xfinity. I almost went with the Hitron CODA56 but people are still complaining about the Puma 7 chipset. My other consideration was the Arris S34 but again people had issues. The CM3000 seems the most reliable but also the most expensive. This refurb from Amazon is almost half the cost of new and it has 90 day return policy.

https://www.amazon.com/dp/B0F3FXYWJS

Xfinity modems: https://assets.xfinity.com/assets...evices.pdf

Issues with Puma 7 chipset: https://www.modemguides.com/blogs...VSeOJdS3QX

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Model: NETGEAR CM3000-100NAR Nighthawk CM3000 DOCSIS 3.1 Mid/high-Split Cable Modem, Up to 2.5Gbps, Black - Certified Refurbished

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Sort: Lowest to Highest | Last Updated 3/17/2026, 06:39 PM
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Amazon$159

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Today 05:58 PM
25 Posts
Joined Oct 2014
M5910Today 05:58 PM
25 Posts
Thanks, OP. I have a CM1100 with a 2 Gbps plan and was under the impression that it was sufficient. After doing some research, I realized that even with link aggregation, it isn't—and this is the right approach
Today 07:34 PM
5 Posts
Joined Nov 2018
stewxvToday 07:34 PM
5 Posts
Great find, thank you!
Today 08:40 PM
1,066 Posts
Joined Mar 2009
ginuwinqbinToday 08:40 PM
1,066 Posts
Damnit just paid full price 2 weeks ago.

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