12-27-2017, 04:12 AM
quote:
Originally posted by ericlp
Cable wires pretty much max out at 300 megs. They also, aren't a guaranteed speed as like the old "party" phone lines, your connection is shared. So, if you got a bunch of people on your line D/L all at once your speed will very.
300Mbps isn't the limit for cable modems. Spectrum is rolling out 1Gbps cable modem service on Oahu and on selected areas on the mainland have this speed tier. I've seen modems on line that can do 2Gbps using channel bonding.
https://en.wikipedia.org/wiki/DOCSIS
DOCSIS 3.1
First released in October 2013, and updated several times since, the DOCSIS 3.1 suite of specifications support capacities of at least 10 Gbit/s downstream and 1 Gbit/s upstream using 4096 QAM. The new specs do away with 6 MHz and 8 MHz wide channel spacing and instead use narrower (25 kHz or 50 kHz wide) orthogonal frequency-division multiplexing (OFDM) subcarriers; these can be bonded inside a block spectrum that could end up being about 200 MHz wide.[6] DOCSIS 3.1 technology also includes some new energy management features that will help the cable industry reduce its energy usage, and the DOCSIS-PIE[7] algorithm to reduce bufferbloat.[8] In the United States, broadband provider Comcast announced in February 2016 that several cities within its footprint will have DOCSIS 3.1 availability before the end of the year.[9] At the end of 2016, Mediacom announced it would become the first major U.S. cable company to fully transition to the DOCSIS 3.1 platform.[10]