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1333 Review
61 Karma

Review on 📶 MOTOROLA MB7420 16x4 Cable Modem - 686 Mbps DOCSIS 3.0, Comcast XFINITY, Charter Spectrum, Time Warner Cable, Cox, BrightHouse & More Certified by Vedprakash Trilltight

Revainrating 4 out of 5

Heat and Power Measurements

This review was written on the same day I received the modem so do not rely on it for long term experience. The setup process went well, the modem is working correctly. I get the speed I pay for, same as before. I bought the modem because my provider is in the process of updating their network and once the updates are complete I will need a 16 channel modem to keep my current plan with the new speeds they are offering. I wanted to write this review to provide some useful information for anyone considering this model as I'd like to have it documented for newer modems before I buy it. First, it is the heat generated by the device. I've attached a photo taken with a thermal camera showing the modem after 2 hours of use. At its hottest point, it reads 111 degrees Fahrenheit. (Approximately 44 degrees Celsius) This indicates that the modem is warm to the touch but not hot. I also measured the modem's standby power consumption with a kill-a-watt meter. This is done with a modem connected to the network and some devices connected through a router with some open connections but no active downloads or streaming. The idle power consumption is an average of 7.7 watts. I like the modem itself, although at the moment I'm not sure I'll leave it to my own devices. Compared to the power consumption of my previous modem (SB6141) (5.9W vs. 7.9W). 7W) and the heating power (98F vs 111F) is higher. On the other hand, it offers twice as many channels and twice as much maximum speed. Given the jump in performance, the difference between the two likely means that the MB7420 is actually better in terms of performance per watt. If you need the speed that this modem is capable of, then this is a very good option. means the MB7420 is actually better in terms of performance per watt. If you need the speed this modem is capable of, then this is a very good option. means the MB7420 is actually better in terms of performance per watt. If you need the speed that this modem is capable of, then this is a very good option.

Pros
  • Installation is quick and easy with just a few quick steps outlined in the Quick Start Guide. Experienced US support specialists are always ready to help you when you need them.
Cons
  • Damaged