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bharath

join:2011-09-15

1 edit
reply to JigglyWiggly

Re: sb6141, sb6180, zoom5341, dpc3010

I have friends in cisco and will see what is the price I can get this modem for through them. If it is less than the newer Motorola SB6141 or zoom 5341j, I might think about getting it activated through ComcastSteve.

Edit: The only reason I am looking into this modem, is that it seems similar to dpc3008 except for the added USB connection.

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n_w95482
Premium
join:2005-08-03
Ukiah, CA
reply to bharath

Re: sb6141, sb6180, zoom5341, dpc3010

said by bharath:

Edit: The only reason I am looking into this modem, is that it seems similar to dpc3008 except for the added USB connection.

There's another difference as well, something that intrigues me: the 3010 has two RF tuners, whereas the 3008 uses a single tuner. I wonder what benefits/differences using two tuners presents in real-world conditions.

DPC3010 info sheet
DPC3008 info sheet

Provided I can get it for a decent price outside of eBay, and I can get a definitive yes/no from Mediacom on whether it will function on their network, I might pick one up for my dad.
--
KI6RIT
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telcodad

join:2011-09-16
Lincroft, NJ
kudos:5
reply to n_w95482

Re: sb6141, sb6180, zoom5341, dpc3010

said by n_w95482:

There's another difference as well, something that intrigues me: the 3010 has two RF tuners, whereas the 3008 uses a single tuner. I wonder what benefits/differences using two tuners presents in real-world conditions.

Actually, from what I can tell, it looks like the DPC3010 uses the older "first generation" DOCSIS 3.0 Broadcom BCM3380 chipset with its "Integrated 64-MHz wideband receiver with two independent 32-MHz blocks" (»www.broadcom.com/products/Cable/···/BCM3380 and »datasheet.elcodis.com/pdf/48/45/···fsbg.pdf) while the DPC3008 uses the "second generation" BCM3382 chipset with its "second generation integrated wideband tuner, with an extended bandwidth of 96MHz" (»www.broadcom.com/products/Cable/···/BCM3382).

From the press release for the BCM3382 (»www.broadcom.com/press/release.p···=s434809 ):

"... the new single-chip Broadcom BCM3382 solution improves RF performance with its second generation of integrated tuners ..."

So it looks like the DPC3008 modem is the later model of the two in that it uses the newer Broadcom BM3382 chipset.

Also, the data sheet for the DPC3010 says "Copyright 2009-2010" and dated "November 2010," while the one for the DPC3008 is "Copyright 2010, 2012" and dated "August 2012."

n_w95482
Premium
join:2005-08-03
Ukiah, CA

Ah, that makes sense now. I didn't even notice the dates on the info sheets . I was seeing the dual tuner/32 MHz part on the 3010 and wondering why it was narrower overall than the 3008.

Strange that I heard about the 3010 way after the 3008, I guess it wasn't a popular model. Mediacom seems to really like the DPC3000, and I was wanting to get something a bit newer, so maybe it'll be the 3008 then.
--
KI6RIT



telcodad

join:2011-09-16
Lincroft, NJ
kudos:5

One thing I forgot to mention about the DPC3008 is that there is a thread on the Comcast Help and Support Forum about an issue with frequent disconnects that many people have had with that modem: »forums.comcast.com/t5/Connectivi···/1254989

However, according to the latest posts in that thread, it looks like a recent update to a May 2012 version of the firmware may have resolved the issue.



Ripper
Premium
join:2002-02-07
West Palm Beach, FL
reply to telcodad

The Zoom 5341j also uses that newer Broadcom BCM3382 chipset also.See this »Zoom 5341G (4x4) vs Zoom 5341J (8x4)



telcodad

join:2011-09-16
Lincroft, NJ
kudos:5

Yes, and as was said in this thread »Re: [Connectivity] Mototola SB 6141 , I think the choice of good 8x4 modems right now comes down to either the (well regarded) Zoom 5341J or the (currently well reviewed) Motorola SB6141, with the TI/Intel Puma 5 TNETC4840 chipset.

Also, there should be a new generation of modems released soon incorporating Intel's next generation "Puma 6" chipset: »www.lightreading.com/blog.asp?doc_id=218885 and »www.lightreading.com/document.as···d=220955


bharath

join:2011-09-15
reply to JigglyWiggly

Considering all this information now I am skeptical on getting the dpc3010. I was thinking of considering the dpc3008 if I get it cheap from cisco. I would have to find 5341j or sb6141, the only problem being they seem to be really expensive even when looking at a used modem.



NetFixer
Snarl For The Camera Please
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage
·Comcast

2 edits

1 recommendation

reply to bharath

said by bharath:

said by JigglyWiggly:

well if you want to save money you can get this
»www.ebay.com/itm/Cisco-DPC3010-C···ca6a9603

45$ for a dpc3010, comcaststeve said he can activate it but can't guarantee that it will be stable or something. It is much cheaper than a used sb6121, or sb6141 or 5341j though.

Thanks for the link, do you have the same modem and if you do how is your experience with it.



Since Comcast is already placing the blame for your connection problems on your older SB5121, it might not be a good choice for you to try to use a modem purchased from eBay (and that by itself is a risky proposition) that is not officially supported (even if ComcastSteve pulls some strings to activate it). Here is a link to Comcast's official supported modem list: »mydeviceinfo.comcast.net/ (try to find the Cisco DPC3010 on that list).

Of course, after receiving my Caveat Emptor warning, YMMV.
--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.


telcodad

join:2011-09-16
Lincroft, NJ
kudos:5

1 edit
reply to bharath

said by bharath:

I would have to find 5341j or sb6141, the only problem being they seem to be really expensive even when looking at a used modem.

Not sure what your budget for a modem is, but right now the Zoom 5341J is listed on Amazon (»www.amazon.com/Zoom-DOCSIS-Cable···063K4NN6 ) for "only" $77.95 with free (Super Saver) shipping.

At Comcast's current $7/month lease fee, that purchase would pay for itself within the first year.

EDIT: B&H is also showing the 5341J in stock right now for $79.95 with free shipping: »www.bhphotovideo.com/c/product/8···ble.html

Extide

join:2000-06-11
84129
reply to JigglyWiggly

I currently have the DPC3008, and it has the May 2012 firmware. It seems to be stable so far, I have downloaded some pretty healthy torrents and had the connection maxxed out for a while and no hiccups. I would say that there is nothing to worry about regarding stability with the DPC3008 at this point. It is available at Newegg (where I got mine) also, which makes it easy to get. Also, the 3008 IS on that Comcast supported modem list, so there won't be any issues with that.



YukonHawk

join:2001-01-07
Patterson, NY
Reviews:
·Comcast

I concur with PhReE5. I have the same set up and firmware and it as been rock solid. Not one problem since it's install in March of this year. During peak usage on the weekends at our home we could have 1 iPod, 3 laptops and 2 iPads going at once and the connection along with the Apple Extreme 5th gen steams right along without any slow downs. I am on the 50/10 plan as well.



telcodad

join:2011-09-16
Lincroft, NJ
kudos:5

1 edit

OK, then the best price right now for the Linksys/Cisco DPC3008 also appears to be on Amazon (»www.amazon.com/dp/B006IJHK96 ) at $86.99 with free (Super Saver) shipping.

EDIT: B&H is also showing the DPC3008 in stock right now for $89.99 with free shipping: »www.bhphotovideo.com/c/product/8···3_0.html



Ripper
Premium
join:2002-02-07
West Palm Beach, FL
Reviews:
·Comcast
reply to JigglyWiggly

Walmart now has the DPC3008 online with free pickup at store for $86.99. »www.walmart.com/ip/Linksys-DOCSI···03142050


bharath

join:2011-09-15
reply to JigglyWiggly

Amazon and Newegg have it for $86.99 too

Amazon: »www.amazon.com/gp/product/B006IJ···i=507846

Newegg:
»www.newegg.com/Product/Product.a···25120004


dorkino
Premium
join:2004-02-22
Atlanta, GA
reply to JigglyWiggly

Just chiming in with my $0.02 here. I have been experiencing issues in the neighborhood causing an unusually high number of errored codewords. My SB6121 (1.0.6.6 FW) freaks out about this and T3 errors many times daily - on average about once per hour. When it does this, I notice a 5-10 second drop in internet connection that's mostly only noticeable while gaming, or if I happened to try to send an HTTP request to a website at that very moment. It's not enough to disconnect my work VPN, but it's certainly enough to cause lag spikes in my online gaming.

In an effort to help alleviate some of the frustration associated with this (until I or Comcast manages to find and fix the issue), I purchased and provisioned the Zoom 5341J. I've found that it tolerates the RF issues much better than the SB does. It's not perfect - I'll get a 1 second or so lag spike every now and again while gaming, but the T3 timeouts have decreased significantly. It's only been online for 2 days, but I just received the first (of two) T3 timeouts this morning. Could be coincidence, IDK.

One other thing I noticed - while troubleshooting this w/ the SB6121, I moved it to a different drop in the house. Signal levels were roughly the same, although downstream power was a bit higher due to one less barrel connector being involved as well as about 50' less cable run. While running at around 6dBmV power level down, the modem experienced numerous T3 errors in the hour I had it online, and even suffered a T4 reboot. So I moved it back to the original drop, and the "original" problem returned where it worked much better but still occasionally experienced issues.

So this left me with a few theories... one, I'm thinking that I do have a line noise problem, and the increase in downstream transmit power potentially exacerbated the issue. That, or when I unplugged the modem to move it, it locked onto different frequencies that are suffering from the noise more than others.

tl;dr - The Zoom 5341J seems to be more tolerant of RF issues than the SB 6121.


bharath

join:2011-09-15
reply to JigglyWiggly

I ended up buying the dpc3008 through my friend who works for Cisco, got it for $55+tax. I am currently on the may firmware from comcast. The connection seems to be definitely stable no dropouts like earlier. I guess with 8 channels down and 2 channels up I definitely am seeing better speeds.