Any good modems for Comcast users?

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CeroDavid

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Apr 19, 2014
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I've always rented my modem from Comcast and I hardly ever knew I could actually buy one....

I've heard this ones pretty good
http://www.newegg.com/Product/Product.aspx?Item=N82E168... but do you guys have any recommendations?
 
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CeroDavid

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Apr 19, 2014
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Looks very similar to the one I originally intended to link, which was a MOTOROLA SB6141 SURFboard DOCSIS 3.0

http://www.newegg.com/Product/Product.aspx?Item=N82E16825390001

Might just go for the SB6121 but would you happen to know if there are any major differences between them?
 
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Guest

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Yeah, the 6141 isn't quite as compatible with Comcast's infrastructure. If you google around you'll find a list of compatible devices and they rate them from 1 to 3 stars. The 6121 rates as 3 stars (so perfectly compatible) while the 6141 ranks as 1 star. Here is the link: http://mydeviceinfo.comcast.net/

Since I don't think Comcast offers anything over 150 Mbps at the moment (I could be wrong, but unless you get FIber to your Home and that uses a different type of equipment) I'd say for the money go with a 6121. They are easy to find and the Surfboard series has always been good. I have one and get over the advertised speeds (I pay for 25 down, 5 up but get 32 down and 7 up). So there you go! As much help as I can give you.
 
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CeroDavid

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Yep the highest speed Comcast offers is 105 Mbps. Thanks for the reassurance^ I'll be going with the SB6121.
 
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wacabletech

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The major difference between the 6121 and the 6141 is the number of carriers it CAN potentially bond. the 6121 supports 4, and the 6141 supports 8 on the downstream I think both only support 4 on the upstream. but this is limited by the plant your in and what the cmts allows it to bond to as well. For instance where I work when the 8x4 modems first were coming out we only had 4 carriers available so you'd only get 4. Is there an advantage to using 8 over 4 channels, only for the power boost speed and balancing out the load [which if 4 won't do it you most likley have a cable damaged and it won't actually help to have 8.

The incompatibility with comcast's netowrk I reserve for visual verification I hear people say we have problems with modems all the time, then I look and the people just have shitty cable in their house because they did not want to pay to get it updated, etc.. It's funny they will buy $500 in modems and routers but refuse to get the 4 lines replaced for $100. or my favorite its the landlord's problem: ok, but your modem is on it and he's not going to care.
 
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abailey

abailey

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Mar 23, 2014
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I have a 6141 on Comcast network and have had no trouble. It only cost a little more than the 6121 and it is a bit more future proof as the cable companies upgrade their speed offerings. The 6121 is a supported modem for Comcast and they will do the flash upgrades for it.
 
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