[jeramey]

You’d probably need to do this with an AC-DC-AC transformer to also get the circuit converted to the 50hz cycle European power systems use, but it’d just be a waste because of the power losses involved (not to mention the expense of the transformers). Also, a typical 15A circuit in a home will handle ~1.8kw of sustained load, so as long as you can dedicate a circuit to such a rig, you’d be fine.

[garaetjjte]

Computer power supplies won't care about 50/60Hz difference (maybe except some slight efficiency change).

[ThePowerOfFuet]

Computer power supplies don't give a shit about frequency. They will happily accept 120/50 or 240/60.