Quick clarification: I am not claiming that Piracetam can't have any effects in healthy, mildly-to-moderately gifted individuals, it's just that I am not certain you can extrapolate from studies of Piracetam use with impaired individuals.

Finally there could be other benefits to Piracetam use (reduced anxiety, better memory, better focus, etc..) even if there's no "boost" to performance IQ.

I just don't (yet?) see conclusive evidence of this.