Singapore has 100% coverage by fibre optic cables for internet transmission already and yes they are able to run both fibre optic and power cable a lot further then to a floating data centre just of Loyang Offshore Base, if required.
PS> Maybe something that could solve the problem of what to do with obsolete oil & gas production platforms all around the place?
Place data centres on them, with fibre optic cables to supply the data and floating wind turbines around to supply the power. Plenty of seawater around for cooling.