I read Cary Millsap's message (on newsgroup or a mailing list). Based on my understanding, he says if user transactions come in less frequently, fewer faster CPUs (like on HP typically) gives better response time; if transactions come in frequently, it's better to have more slower CPUs (typically what Sun does). Yong Huang [EMAIL PROTECTED] Jonathan Lewis wrote: Cary Millsap has an article on his website www.hotsos.com which describes a case where upgrading the CPUs to a higher speed (same number) resulted in the OLTP users complaining about a drop in performance. __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: yong huang INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).