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modem speed verses actual speed using speedtest

jonnyfriendly
Grafter
Posts: 100
Thanks: 9
Registered: ‎30-07-2007

modem speed verses actual speed using speedtest

HI
Im on broadband premium ADSL 2. Have had a very modest speed increase since changing over.
However, according the my Netgear modem interface im getting around 8700kps at the modem
but a speedtest shows i only achieve around 6000kps on the computer. I'm on a macintosh using ethernet.
Can anyone explain why there is such a discrepancy ?
thanks
4 REPLIES 4
jelv
Seasoned Hero
Posts: 26,785
Thanks: 971
Fixes: 10
Registered: ‎10-04-2007

Re: modem speed verses actual speed using speedtest

Can you run the BT speedtest and see what it says for your IP Profile.
Then look at the current line speed reported by https://portal.plus.net/my.html?action=stable_rate which should be the same.
If it is not the same you need to contact support.
Note speed tests will always be lower than your sync rate reported by the modem. Firstly there are a lot of protocol overheads - the maximum theoretical speed on a line syncing at 8M is 7150, secondly the IP Profile speed which is the limit set by BT goes in steps. You could be syncing just below the threshold for the next step and lose out because of that.
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£14.40/month)
Mobile: iD mobile (£4/month)
jonnyfriendly
Grafter
Posts: 100
Thanks: 9
Registered: ‎30-07-2007

Re: modem speed verses actual speed using speedtest

hi
just tested - bt speedtest says  5800 kps
the current line speed according to the plus link you gave is 6500kps
is this as it should be?
coastergrotto
Grafter
Posts: 1,016
Thanks: 5
Registered: ‎01-08-2007

Re: modem speed verses actual speed using speedtest

Sounds about right to me.
Mand
Grafter
Posts: 5,560
Thanks: 2
Registered: ‎05-04-2007

Re: modem speed verses actual speed using speedtest

@jonnyfriendly, your profile has been updated to 8000 (today) so you should be seeing better speeds now.