I wondered about this. Microsoft on Compaq topped the Clustered benchmark, not the Non-Clustered one. You also mentioned that TPM-C is ten years old, which is also pertinent to the discussion because the computing power of the computers has increased dramatically. TPM-C came out in 1991 (1992? about the time the DEC Alpha came out) and some people think it's outdated. Certianly this benchmark will become meaningless at some point, just as statements by Bill Gates that no one will need more than 640KB RAM, or Digital saying 64-bit computing wouldn't catch on.