Re: Virgin Media UK Confirms Trial of Faster Broadband Upload Speeds
50% increase in throughout vs qam16. As an example, if the maximum throughput was something like 24mbits per channel on qam16, then it would be 36mbits on qam64. When you tie that in with a bonded 3 channel group then you are looking at 72mbits vs 108. This is why all downstream channels are qam256 (more juice).
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