Motorola SB6120 Docsis 3.0 Cable Modem

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kidsafe

Senior member
Jan 5, 2003
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Not sure if any of the ISPs give you a discount on owning your own modem for D3 service. I know Comcast doesn't, so in the end buying this modem just puts you $100 in the hole when a modem is already provided, and paid for by your subscription. Otherwise this is a 'decent' price on the modem and it's backward compatible so long as your ISP wants it to be.
 
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slapkey

Member
May 29, 2006
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Originally posted by: kidsafe
Not sure if any of the ISPs give you a discount on owning your own modem for D3 service. I know Comcast doesn't, so in the end buying this modem just puts you $100 in the hole when a modem is already provided, and paid for by your subscription. Otherwise this is a 'decent' price on the modem and it's backward compatible so long as your ISP wants it to be.
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most cable companies that i've had experience with charge a monthly fee for modem rental, varying from $3-$5/month.
 
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kidsafe

Senior member
Jan 5, 2003
283
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Originally posted by: PeteyCPU
Comcast in Chicago charges $3 bucks a month to rent if you don't own your own
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AFAIK they do not extend this to 22/5 or 50/10 D3 customers. But assuming $3/mo means it'll be 3 years before the modem pays for itself anyway.
 
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Souka

Diamond Member
Sep 25, 2000
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Also, for D3 service from Comcast they PROVIDE the cable-modem.

So again, you're $100 in the hole...also, any problems you have they'll want you to use their modem....

Speaking of which, is this Motorola SB6120 on thier supported D3 modem list?
 
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kidsafe

Senior member
Jan 5, 2003
283
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Originally posted by: Souka
Also, for D3 service from Comcast they PROVIDE the cable-modem.

So again, you're $100 in the hole...also, any problems you have they'll want you to use their modem....

Speaking of which, is this Motorola SB6120 on thier supported D3 modem list?
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Right, that's what I've been trying to say. And yes, it is on their supported list for all DOCSIS specs...they initially rolled out SB6100s, but are now using SB6120s with full upstream channel bonding.
 
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PeteyCPU

Senior member
Mar 8, 2002
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Originally posted by: PeteyCPU
Comcast in Chicago charges $3 bucks a month to rent if you don't own your own
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Yeah, I think the above applies to the 12/6 service non-D3.
 
R

RBC

Senior member
Jul 27, 2001
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I was just at an OD and they have the Linksys cable modem that I have been using for a couple of years now with Insight for $49.
 
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Montano

Lifer
Jan 26, 2002
14,461
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Originally posted by: PeteyCPU
Comcast in Chicago charges $3 bucks a month to rent if you don't own your own
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Same here in Central Cali. Comcast tops out @ 16/2 in my area. My Linksks BEFCMU10 V4 is going out on me, so I figured I might as well future-proof myself in case we ever do get DOCSIS 3 here. I have owned my own modem for over 5 years now, so I'm not too worried about it paying for itself.
 
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kidsafe

Senior member
Jan 5, 2003
283
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Originally posted by: Kaido
Doubles as a cheese grater! :D
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It's actually quite nice...It's not as obvious as the SB51XX modems in a household setting. It's smaller and mine runs much cooler than the SB5100 it replaced.
 
Muadib

Muadib

Lifer
May 30, 2000
18,120
910
126
Originally posted by: dabuddha
Any advantages of this over the SB5100?
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Yes, the SB5100 is a Docsis 2.0 modem. The SB6120 is a Docsis 3.0, and can handle the faster 3.0 speeds. Whether you need the SB6120 depends on your cable company. Comcast has already started deploying Docsis 3.0. I was told that the best my current 2.0 will get is 15mbps, and if I wanted the faster speeds that will be availible within the next month, I would have to get a 3.0 modem. They will offer 50mbps download package, if you've got the $142.95 a month.

 
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kidsafe

Senior member
Jan 5, 2003
283
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DOCSIS 2.0's max theoretical download is around 38mbps down and 27mbps up using QAM256 both ways. However virtually no cable broadband services us QAM256 on the return path because it would require a lot better infrastructure. QAM64 is typical, and the maximum throughput from that type of modulation at the standard channel widths is ~11mbps.
 
dabuddha

dabuddha

Lifer
Apr 10, 2000
19,579
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Originally posted by: Muadib
Originally posted by: dabuddha
Any advantages of this over the SB5100?
Click to expand...

Yes, the SB5100 is a Docsis 2.0 modem. The SB6120 is a Docsis 3.0, and can handle the faster 3.0 speeds. Whether you need the SB6120 depends on your cable company. Comcast has already started deploying Docsis 3.0. I was told that the best my current 2.0 will get is 15mbps, and if I wanted the faster speeds that will be availible within the next month, I would have to get a 3.0 modem. They will offer 50mbps download package, if you've got the $142.95 a month.
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Ahhh thanks for the info :) I guess in my case it's not worth it then. I'm currently signed up for the 16mbps down plan but only cause im getting it for 19.99/month for 6 months. After this promotion expires, I'm probably going to downgrade to the lowest/cheapest plan they have.
 
Muadib

Muadib

Lifer
May 30, 2000
18,120
910
126
What is the normal price for that 16mbps plan, and are you with Comcast?
 
dabuddha

dabuddha

Lifer
Apr 10, 2000
19,579
17
81
Originally posted by: Muadib
What is the normal price for that 16mbps plan, and are you with Comcast?
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Yep with comcast and I'm not sure what the reg price is to be honest. I signed up back in January and asked for the cheapest plan and the person on the phone told me about this 6 month special.
 
dabuddha

dabuddha

Lifer
Apr 10, 2000
19,579
17
81
Originally posted by: SirChadwick
I thought the $19.99 plan w/ Comcast was 6mbps down. Reg price is $59.99 I believe.
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Maybe it's a regional thing. But yeah, 59.99 is way too high for me :/ I have to find out what their cheapest plan is. I'm good up until July.
 
ViviTheMage

ViviTheMage

Lifer
Dec 12, 2002
36,189
87
91
madgenius.com
with my 50/10 service they gave us this modem...and in a few years when it's bad (since the technology is still relatively new) they can give us something new...we do pay 2.99$ extra to 'rent' it...but if it breaks, they swap it out no charge.
 
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sxr7171

Diamond Member
Jun 21, 2002
5,079
40
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What do you guys think of the claims that getting this improved speeds even with 2.0 service (read the reviews): http://www.amazon.com/Motorola...bmissionDateDescending

Does anyone know how they cap the speeds and if buying this modem somehow uncaps the speeds by a certain percentage. Is that even possible? Or is it just helping people with poor signal?
 
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