Hi!
I wanted to share some research I found since I was looking for a new cable modem. You may be wondering what is the difference between the SB6183 and the MB7420. They are both 16X4 and both have a 2 year parts and labor warranty. So...how are they different? They should function almost exactly the same except it seems that the latest chipset in the SB6183 is a Broadcom BCM3383 which is an older chipset while the MB7420 has a newer Broadcom BCM3384 chipset. Actual usage may not differ noticeably but if you want the latest then get the Motorola MB7420.
I had read in another place that the earlier SB6183 got upgraded to a newer chipset (BCM3383) then it used to have and that resulted in a little better performance in the RF section so every little bit helps.
I also noticed that there is a very healthy competition going on between Texas Instruments and Broadcom in this field.Some of the other Arris SBxxxx use the TI chipset. Both the Broadcom and the TI chipsets seem very close in performance and longevity so just know that there have been more than one SB6183 released (the difference being the chipsets). The MB7420 is quite new so it may not have had more than one version released so far. It is unknown if the differences are marked by version numbers on the outside or not.
Best regards and best hunting!
EDIT: As of today the Motorola is $10.00 less at Newegg.
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