I have tried 6 different speedtest websites, and they all give different results. Can anyone suggest why this should be so and is there a really dependent site that I can use ?
If want to check your speed then use the test which is provided by your ISP and it will give you the results if are not good to speak to them about your connection with the results you got from their test.
There are many internet speed test sites are available..
It makes different results, because
many Internet speed test sites are designed to test only dial-up or DSL services.
Different web sites are likely to have different IP routes.
These different routes will have different performance capabilities as well as different loads which will contribute to differences in speed. I regularly checked my internet speed from http://www.scanmyspeed.com/ it is give accurate speed result..