Windows 8 Testing
If you don't want to use an outside website to test your Internet strength you can check your connection speed directly through Windows. In Windows 8, right-click on the wireless strength icon on your desktop and click "Open Network and Sharing Center." When you click on your connection in this menu, it will show you the current wireless speed you're experiencing.
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The signal-to-noise ratio of your connection detects the amount of background noise on your connection. Background noise can disrupt your Internet connection. Your service provider can determine how much your connection is being slowed by the background noise and give you an estimate of your connection's speed.