Path: utzoo!utgpu!watserv1!watmath!att!att!linac!uwm.edu!ux1.cso.uiuc.edu!news.cs.indiana.edu!news.nd.edu!caradhras.cc.nd.edu!mahesh From: mahesh@caradhras.cc.nd.edu (Mahesh Subramanya) Newsgroups: comp.arch Subject: Re: why is 33 MHz a popular number? Message-ID: <1990Nov28.010513.17760@news.nd.edu> Date: 28 Nov 90 01:05:13 GMT References: <1990Nov27.192504.11191@ux1.cso.uiuc.edu> Sender: news@news.nd.edu (USENET News System) Reply-To: mahesh@caradhras.cc.nd.edu (Mahesh Subramanya) Organization: Univ. of Notre Dame Lines: 18 In article <1990Nov27.192504.11191@ux1.cso.uiuc.edu>, shair@ux1.cso.uiuc.edu (Bob Shair) writes: >The new IBM RISC 6000 model 550, at 41.6MHz or 24ns, may be >something of an exception. I'll be interested to see whether >anyone else uses that rate. From what I've heard, the reason behind that was that it was originally spec'd at 40 Mhz, but they ran into some race conditions. So they basically tweaked the clock around till the race cond. disappeared. The number *happened* to be 41.6. Apart from the fact that 41.6 is my second favourite number (8-)), there is nothing else really exceptional about it in terms of clock speeds. -- ************************************************************************ Mahesh Subramanya INTERNET: mahesh@caradhras.cc.nd.edu Senior Analyst Office of University Computing NeXT: mahesh@numenor.next.nd.edu University of Notre Dame Voice: (219) 239-5600 x6421 Notre Dame, IN 46556 ************************************************************************