Silicon itself is certainly not rare (even if the purification process is somewhat exigent on the feedstock), but modern chips uses a lot of rare-ish elements in their makeup (hafnium for mosfet gates, gold for chip/package connexion, etc...).
Silicon itself is certainly not rare (even if the purification process is somewhat exigent on the feedstock), but modern chips uses a lot of rare-ish elements in their makeup (hafnium for mosfet gates, gold for chip/package connexion, etc...).