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BoastonMA

@mathworks.com

Do I need DOCSIS 3.0 modem? Considering SB6120

Hi,

I am leasing modem from Comcast, but recent rate hike from $5 to $7 is prompting me to dump Comcast and buy my own. The modem I currently leasing is DOCSIS 3.0 and give me good speed. I am on Performance tier but some time see speed, especially after having this modem, going up to 60Mbps/5Mbps. Is this because of modem or something else. Should I go for Motorola SB6120 or Motorola is not good and should keep paying Comcast $7 a month...Please advice..Thanks

Papageno

join:2011-01-26
Portland, OR
I'm a noob, so take my advice for what it's worth, but I understand that at the Performance/Performance Plus tier you only need DOCSIS 2, and that getting a DOCSIS 3 modem is only for future-proofing purposes, in case you upgrade later to Extreme 50 or something.


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:10

1 recommendation

said by Papageno:

and that getting a DOCSIS 3 modem is only for future-proofing purposes, in case you upgrade later to Extreme 50 or something.

There are capacity/congestion and failover benefits to be had by using a D3 capable modem on an upgraded to D3 system.


Chris 313
Come get some
Premium
join:2004-07-18
Houma, LA
kudos:1
Reviews:
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1 edit
reply to BoastonMA
Get the 6120, be future proofed and definitely ready for the next upgrade that's coming. If you haven't already, the upcoming Performance speed will be 15/2.

See here: »Comcast Shaking Up Speed Tiers (Again)

Amazon has the 6120 available, and been on sale recently. You might get lucky too: »www.amazon.com/Motorola-SB6120-S···5&sr=8-1


DarkLogix
Texan and Proud
Premium
join:2008-10-23
Baytown, TX
kudos:3
reply to Papageno
D3>D2 = win/win

Papageno

join:2011-01-26
Portland, OR
reply to BoastonMA
Thanks for setting me straight. Anyone in Portland using it with Comcast's Performance tier? I want to have some idea that it'll work properly before I shell out for it.


Gsnorgathon

join:2011-02-18
Seattle, WA

3 edits

1 recommendation

Not in Portland (Seattle), but the sb6120 is an officially supported modem (see mydeviceinfo.comcast.net), and works fine with Performance here. I'd guess I've gotten maybe 10% better upload speeds than my docsis 2.0 (terayon tj 715x), and more consistent download speeds, possibly due to the downstream channel bonding. Downstream SNR went from ~35 to 37.

Papageno

join:2011-01-26
Portland, OR
OK, bought. Amazon has it on sale for less than 100 bucks, and I've got "free" two-day shipping with Prime. Besides, I think the modem rental here is 8 bucks a month.


sortofageek
Runs from Clowns
Premium,Mod
join:2001-08-19
kudos:23
reply to BoastonMA
I added a link to this topic in the list of similar topics in the first post of the stickied DOCSIS 3.0 thread.

Recap:

DOCSIS 3.0 Modem for a DOCSIS 2.0 Tier
»Docsis 3 modem for lower tier useful?
»Do you need DOCSIS 3.0 Modem to get 12mbs download?
»Do I need DOCSIS 3.0 modem? Considering SB6120
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