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Old 11-10-2007, 17:11   #6
Mick Fisher
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Join Date: Aug 2004
Location: Northants
Age: 80
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Re: Broadband speed testing

Quote:
Originally Posted by waylandzoo View Post
I have 20 gig Virgin Media broadband and the speed tester via ComputerActive magazine checks the speed hourly automatically.
This gives 13 gig with small variations each way.
When I use Speedtest.net, the usual answer is about 21 gig, when I use ZDNet UK speedtester the answer is usually 6 to 8 gig.
How come these big differences and which one is right, does anyone know?
I note that, when testing the speed via a test download from a capable source such as a news group, that it takes a quite a little while for the download to reach full speed. Now this could indicate that my newsreader is mis-reporting the speed or it could mean that quite a large amount of data must be throughput before a true reading is arrived at. I prefer the latter explanation and would hazard an opinion that the test sample size used on most speed test sites is insufficient to test a 20mbps connection accurately.
Lack of consistency could be attributed to the browsers cache entering the equation and further muddying the water.
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