Bruce Johnson wrote: > Len and Andreas clearly have more recent experience than I on this > subject; I'd go with their recommendations and stick to the Dual 1 Gig.
i can only add my personal experience. i do not use the apps you mention. i do use apps (gaussian and spartan) that do very CPU intensive tasks, that can take hours, days, weeks, or months to execute a single instruction. there is no limit, really, other than the size of the task given them, and my willingness to wait for the answer. the computers that perform these computations are dedicated machines. i never have other apps open when the computations are in progress. i compared a QS/933 to a QS/1GDP and found that on computations that required several hours to complete, the 933MHz was (within 0.5%) exactly 93.3% as fast as the dual 1 gig. the dual processors feature made absolutely no difference. the dual one gig processor was no faster than a single 1 gig processor would have been when executing a single job. where the dual processors ARE of value is that it allows me to submit two jobs simultaneously on the 1 gig DP, with only a slight loss of computing efficiency. in essence, the DP QS is like having two independent 1 gig QS computers in one box. of course, this only applies to my situation, but it may shed some light on the question. many (if not most) apps make no use of the dual CPU architecture, and most of the apps you mention are nowhere near as CPU intensive as the ones i use. OSX itself makes only limited use of DP architecture, so the benefits when multitasking will be minimal, unless you are running two apps simultaneously which are both very CPU intensive, like photo editing with one app while another app is ripping video in the background. so long story short, i think bruce's original assessment was correct. theoretically, the 1.4 gig single processor should be nearly 40% faster for most applications. however, i would also add that i have had unsatisfactory experiences with several Sonnet products, and would never consider getting another processor upgrade made by them. john --~--~---------~--~----~------------~-------~--~----~ You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -~----------~----~----~----~------~----~------~--~---
