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    Why so much variance?

    This is a discussion on Why so much variance? within the Speed tests and how to get better results forums, part of the Sky Broadband help and support category; I used to occasionally test my broadband speed using speedtest.net. However, a while back their interface changed and at the ...

    1. #1
      SilentBob's Avatar
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      Why so much variance?

      I used to occasionally test my broadband speed using speedtest.net. However, a while back their interface changed and at the same time this site started reporting much lower speeds. I have since used the test on this site as my benchmark.

      There has been recent press regarding the speed test on "Top 10 Broadband", as this also maps speeds & providers of those in your area. I thought that this sounded interesting, so gave it a try. However I was surprised to see such a slow download speed. This can't be right, so I tested on several sites, getting the results below:

      SkyUser - Sky User - Broadband Speed Tester
      Down = 12.8 Mbps
      Up = 0.91 Mbps

      Speedtest.net - Speedtest.net - The Global Broadband Speed Test
      Down = 6.77 Mbps
      Up = 0.91 Mbps

      ThinkBroadband - thinkbroadband :: Broadband Speed Test
      Down = 12Mbps
      Up = 0.9 Mbps

      Broadband Speedchecker - Broadband Speed Checker - THE UK's No.1 Broadband Speed Test
      Down = 9.33 Mbps
      Up = 0.94 Mbps

      BBMax - Namesco BroadbandMax ADSL Broadband Bandwidth speedtest | Test your ADSL Broadband connection speed
      Down = 12.93 Mbps
      Up = 0.93 Mbps

      Top 10 Broadband - Top 10 Broadband » UK Broadband Speed Test - Test Broadband Speeds in Seconds & See Your StreetStats
      Down = 6.9 Mbps (initially it tested at 2.53 Mbps!)
      Up = 0.9 Mbps

      Why such a variance between the different tests. Interestingly, Top 10 BB was testing at only around 2.5Mbps. I carried out a few tests and got this. However, after performing all these tests for this thread, it is now reporting just under 7Mbps. I have not rebooted the router, or performed any other task that should affect it. However, 7Mbps is still much below what I expect.

      I have also tested in the past d/loading a large file from Microsoft and timing it. This worked out at around 12Mbps.

      Interested to hear views on these different tests, and what can be considered trustworthy.

      Thanks,
      Simon


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    3. #2
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      Re: Why so much variance?

      Think you can safely say you've got a 12Mbps connection!!! I wouldn't worry too much, it's only BB...
      -------------------------------------------



      Useful Sticky: - How To Obtain Your Router Stats, BT Speed Test, Check For Test Socket

    4. #3
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      Re: Why so much variance?

      There are no testers which are 100% accurate. Sky User is better than most. To get an accurate reflection of your speed you need to download a large file from a fast server. This is where speedtesters fall down, they do not transfer enough data for an accurate reading. Try downloading a large file from here and timing it.
      thinkbroadband :: Download Test Files

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      https://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





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      Re: Why so much variance?

      Hi SilentBob

      I work for Top 10 Broadband and I was interested to see your results with different speed tests.

      We've had a few teething problems since we re-launched our speed test (19th October) which probably accounted for the strange speeds you were seeing.

      We have just rolled out an update which fixes things. Would you mind running another test and posting the speed you get this time?

      (You need to clear the cache in your browser to make sure you're using the new version. Let me know if you don't know how to do that)

      Thanks!
      Harry

    6. #5
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      Re: Why so much variance?

      Quote Originally Posted by top10harry View Post
      Would you mind running another test and posting the speed you get this time?
      Hi Harry,

      I have Firefox set to delete everything, including cache, upon exit. So that shouldn't be a problem.

      I have just run the test again with the following results: Down = 3.8Mbps, Up = 0.8Mbps

      And immediately after on the SkyUser test: Down = 12.9Mbps, Up = 0.88Mbps

      Retesting on Top 10 again gave even lower results the 2nd time. Certainly doesn't seem very realistic.

    7. #6
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      Re: Why so much variance?

      Top10 may be having teething problems, but at the moment it is not even in the same league as Speedtest.net, and that's crap. I have just run a test on it and it failed to complete, getting stuck at 0 .25mb. My actual speed is 7.5-7.8 Mb with Skyuser and Thinkbroadband file download.
      I don't think much of their 'Top10 broadband' either, it looks more like an advert for Virgin, who don't have a presence in my area yet are shown as the best choice of provider.

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      https://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





     

     

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