Just looked up, a windturbine has less infrasound then cars. (german Source) I would guess the datacenter could have more infrasound and thus be a bigger problem. They mention a study about windturbine infrasound and they point towards nocebo effect, but maybe windturbines are at a border where the health effects are very difficult to measure. So maybe studies about the infrasound of datacenters could find something. On the other hand, datacenters bring a lot more pollution factors, like light-, air- and waterpollution.