Try a test at speedtest.net
It should detect you're on a gigabit connection and suggest you download their desktop app for Windows... It gives far more consistent results, than an in-browser test.
For the server; I normally choose University of Oxford IT services and my average speedtest (using that app and the Oxford server) is something like 910Mbps/109Mbps
Ade
FTTP Halo 3 with BT
DL 500Mbps
UL 73Mbps