I caught a newssnippet this morning as I was waking up, and maybe there is a real tech expert out there who can give me an answer to my question... According to the news, the "Computing-Centre" in Germany has just purchased an NEC Supercomputer for 36 Million Euro. I think its the same one as they have in Japan with 13 Teraflops?!?. Anyway, I know that the Mac-Cluster was less than 10% of this price, with almost the same computing power. What I want to know, is if the Mac-Cluster has a disadvantage compared to the standard supercomputers, and If not, why do these Supercomputers still get chosen over a Cluster?