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Linksys CM3024 DOCSIS 3.0 24x8 Cable Modem EXPIRED

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Grey Dealz via Amazon.com has Linksys CM3024 DOCSIS 3.0 24x8 Cable Modem on sale for $58.09 now-> $58.79. Shipping is free. Thanks sinnr
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This cable modem features high WiFi speeds from your existing ISP plan up to 300Mbps. Compatible w/ Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision & more. Ideal for streaming HD media, online gaming, web browsing & more. Offer valid while promotion last - Discombobulated

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Edited March 11, 2018 at 11:43 PM by
Amazon [amazon.com] is selling the Linksys High Speed DOCSIS 3.0 24x8 Cable Modem, Certified for Comcast/Xfinity, Time Warner, Cox & Charter (CM3024)

Free 2 Day with Prime, of course.

When I checked eBay, I'm seeing refurbs on this model going for $60. It looks like Square Trade is also offering 3 year protection for $1.21 via the Amazon link, if that's important to you.

Definitely a better option than dropping $10/month for modem rental.
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Arvada, CO Joined Nov 2008 L3: Novice
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Cable is a shared medium and each DOCSIS channel provides around 43Mb/s of usable bandwidth (8*43=344).
If a neighbor with a modem on the same DOCSIS channel(s) decides to start downloading/streaming games/tv shows/movies/etc and saturates all of the channels, you're going to have a bad time.

Having a modem that's connected with additional channels will allow for better quality of service during peak times.

Example:
You - 4 channel modem, connected via channels 1 2 3 4 (172Mb max)
Neighbor - 8 channel modem, connected via channels 1 2 3 4 5 6 7 8 (344Mb max)

You and your neighbor both have 150Mb/s service.
You're connected with 4 channels, but they overlap with the neighbors' 8 channels.

Let's say the neighbor is downloading at 150Mb/s.
If that's divided evenly across the 8 channels, each one will be at 50% saturation.

Instead of 4*43=172Mb/s of available bandwidth for your use, there's 4*43*.5 = 86Mb/s.

This is where having more channels allows for better QoS.

If you decide to simultaneously download at 150Mb/s on your 4 channel modem, the neighbor's 8 channel modem will shift the load to the other channels.
If you and your neighbor both had 4 channel modems that overlapped, neither of you would get full speeds at the same time.
87 Helpful?
If im correct you would need a docsis 3.1 modem to be able to do gigabit internet
7 Helpful?
Note:
The Linksys CM3024 modem provides stable high-speed Internet access for cable customers with ISP plans offering speeds of 250 Mbps* and up.

Cable customers with broadband plans between 100 and 250 Mbps should use the Linksys CM3016 Cable Modem, while the Linksys CM3008 Cable Modem is ideal for Internet service plans of 100 Mbps or less.
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#3
Note:
The Linksys CM3024 modem provides stable high-speed Internet access for cable customers with ISP plans offering speeds of 250 Mbps* and up.

Cable customers with broadband plans between 100 and 250 Mbps should use the Linksys CM3016 Cable Modem, while the Linksys CM3008 Cable Modem is ideal for Internet service plans of 100 Mbps or less.
Reply Helpful Comment? 7 0
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#4
Cable modem noob question. CM3008 is an 8x4 modem with down speeds of 340Mbps, why would they recommend it for 100Mbps or less service? You see a lot of used 8x4 modems selling for super low prices on eBay and most people have service less than 340Mbps.
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#5
Will this work with my gigabit FiOS? Tired of renting
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#6
If im correct you would need a docsis 3.1 modem to be able to do gigabit internet
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#7
Quote from mepo12
:
Will this work with my gigabit FiOS? Tired of renting
This is a cable modem not a fios gateway...
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#8
Was about to pull the trigger but then noticed it uses the Puma 6 chipset. Gets good reviews though. Worth spending more for a non-Puma chipset? Looks like the Netgear CM600 is $80 at Amazon.
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#9
Quote from BGRT
:
Cable modem noob question. CM3008 is an 8x4 modem with down speeds of 340Mbps, why would they recommend it for 100Mbps or less service? You see a lot of used 8x4 modems selling for super low prices on eBay and most people have service less than 340Mbps.
as a network engineer running 250mbit service on an 8x4 yielding 260, im also stumped and curious what possible answer there could be to this question.
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#10
Will this work with spectrum?
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#11
Quote from BGRT
:
Cable modem noob question. CM3008 is an 8x4 modem with down speeds of 340Mbps, why would they recommend it for 100Mbps or less service? You see a lot of used 8x4 modems selling for super low prices on eBay and most people have service less than 340Mbps.
Quote from dcd1182
:
as a network engineer running 250mbit service on an 8x4 yielding 260, im also stumped and curious what possible answer there could be to this question.
Cable is a shared medium and each DOCSIS channel provides around 43Mb/s of usable bandwidth (8*43=344).
If a neighbor with a modem on the same DOCSIS channel(s) decides to start downloading/streaming games/tv shows/movies/etc and saturates all of the channels, you're going to have a bad time.

Having a modem that's connected with additional channels will allow for better quality of service during peak times.

Example:
You - 4 channel modem, connected via channels 1 2 3 4 (172Mb max)
Neighbor - 8 channel modem, connected via channels 1 2 3 4 5 6 7 8 (344Mb max)

You and your neighbor both have 150Mb/s service.
You're connected with 4 channels, but they overlap with the neighbors' 8 channels.

Let's say the neighbor is downloading at 150Mb/s.
If that's divided evenly across the 8 channels, each one will be at 50% saturation.

Instead of 4*43=172Mb/s of available bandwidth for your use, there's 4*43*.5 = 86Mb/s.

This is where having more channels allows for better QoS.

If you decide to simultaneously download at 150Mb/s on your 4 channel modem, the neighbor's 8 channel modem will shift the load to the other channels.
If you and your neighbor both had 4 channel modems that overlapped, neither of you would get full speeds at the same time.
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#12
Quote from boyunse
:
Will this work with spectrum?
Yep, don't know why you'd want too though since they don't charge for it.
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#13
Would it support Comcast/Xfinity VOIP? If not, what needs to be done to use this modem?
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#14
Quote from Atachi
:
...
Awesome explanation!
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#15
Quote from Gabik123
:
This is a cable modem not a fios gateway...
Correction . Fios does not use modems or gateways but routers Smilie. OP simply needs a good router for gigabit.
Reply Helpful Comment? 0 0
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