seems like ViZiON is desperately looking for .xrns file #659 here, 
seriously 300 tracks?
well… as we don’t know how much stress the song actually performs on the system, it’s quite hard to say if it would suffice.
only thing i can say is that a 2ghz core2duo is a pretty fast machine for native dsp / samples only renoise operation.
but seeing that your current laptop is a celeron 1.46ghz singlecore, i’d say that the c2d would run your tune with ease if your celeron does it with problems.