Windows 8 Internet Speed Test App

This Windows 8 Internet speed test app Network Speed Test uses servers all over the world and measures your network connection's latency and throughput. Network Speed Test is a free Windows 8 app from Microsoft that allows you to check how fast is your Internet speed is, by measuring network latency, download and upload speeds. Network Speed Test for Windows 8 also provide information about your network, such as the SSID and BSSID when you are connected to a Wi-Fi hotspot. source

Download free Network Speed Test for Windows 8.
Network Speed Test file size 93KB.

Network Speed Test Website.