"At Macworld next week in San Francisco, the Cupertino, Calif.-based company will introduce four new Power Mac models, including a new top-of-the-line computer with a 733-MHz G4 processor, the fastest Macintosh computer to date. Three other Power Macs will contain chips running at 466 MHz to 666 MHz.
All of these computers will also come with a system bus that runs at 133 MHz rather than 100 MHz. "
According to this CNet article.
