Its not that easy as you would assume...your supposed to have like double the power than the peltier requires, right? I can't remember exaclty, so someone is going to have to say how it goes, but I know you can't run the 156w on 156watt PSU.
I think 230w is getting there, but still not enough. If it is twice, then a 300w PSU should be ok, right guys?
Mike