SB 6183 good enough my 400Mbs Xfinity?

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Steve40th

Regular Contributor
I am thinking of upgrading to a faster speed with Xfinity. I have a Archer C7 v2, SB 6183 and a laptop with an Intel 7260 AC wifi chip..
Will this system be able to benefit from the faster speed? I am usually 40 feet away from router at my desk, and I stream videos, youtube etc.
Xfinity says my SB6183 only supports 373Mbps due to "filters"?
Thnx in advance.
 
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avtella

Very Senior Member
The 7260AC should easily be able to do 400 Mbps in my experience but at 40ft depends on obstacles/home construction wood vs concrete walls/granite flooring etc and positing of router and antenna placement within laptop as well. My home is mostly drywall interior with wood flooring so I never had issues getting less than ~300-400 Mbps with a 7260ac through much of our 2 story home. Comcast/Xfinity usually overprovisions all tiers including even gigabit by about 20% so you’d likely get closer to around 480 Mbps on the 400 tier.

As for the modem not fully supporting the 400, they may be right, 686 Mbps is theoretical and real world supported is probably just around the 400 Mbps mark in good conditions. You could just get a Docsis 3.1 Arris SB8200, Motorola MB8600 or Netgear CM1000. The SB8200 is very well built from internal photos I’ve seen and is the model I’ve used till recently.
 
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Steve40th

Regular Contributor
Thnx. I guess the 8200 will future proof me for a while. I will be getting a new laptop with AX and router too, in the near future.
 

sfx2000

Part of the Furniture
SB6183 was a great modem in DOCSIS 3.0 days...

As noted, Xfinity provisions them at a max of 373Mbps - even though the modem itself can go higher - much of this is due to the DOCSIS 3.1 rollout, which is the "filters" that OP speaks of...
 

Steve40th

Regular Contributor
SB6183 was a great modem in DOCSIS 3.0 days...

As noted, Xfinity provisions them at a max of 373Mbps - even though the modem itself can go higher - much of this is due to the DOCSIS 3.1 rollout, which is the "filters" that OP speaks of...
So Xfinity filters it?
 

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