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The main difference is speed capabilities. For docsys 3.0, it has download max of 1 Gbps, upload of 100 Mbps. For 3.1, download speeds can get to 10 Gbps, and uploads of up to 2 Gbps. If you are planning on upgrading your router and need higher speeds, or will, definitely go with the 3.1.
Sorry, there was a problem. Please try again later.DOCSIS 3.1 modems are compatible with download speed of 1Gig and above. DOCSIS 3.0 modems cap at download speed up to 900 Mbps or 1 Gig.
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