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Forum Discussion

PRW1's avatar
PRW1
Follower
May 30, 2020

Performance decreased after Gigabit Upgrade

I was using xfinity extreme (600 mbps download and 15 mbps upload) and my CM500 modem was chugging along just fine since it supports 680 download.  I ordered the gigabit service because it was on special and it would increase by upload to 35 mbps.  I don't need to gigabit download.  To my surprice everything reduced.  I'm now only getting 150 mbps download and 5 mpbs upload.  Is this normal?

1 Reply

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Jun 01, 2020

    The CM500 is not reated for 1Gb ISP speeds, you need a CM1000 or CM1100 for that. 

    What ISP do you have? I'm surprised your ISP let you upgrade with out checking your modem model.