On Dec 7, 2008, at 9:47 PM, insightinmind wrote:
> Has anyone had "add on" drivers, such as one for a PCI Audio card, > that ran okay under 10.5.4, but started causing problems after > upgrading to 10.5.5? 10.5.5 introduced a number of problems, and 10.5.6 will introduce many more, both of these versions having their roots in power management. Lots of changes in the power management and processor slowdown areas, with the goals of minimizing/optimizing power dissipation and consumption for both desktop and laptop units. The two have somewhat different objectives: minimizing the power dissipation in desktops (even if the processor speed isn't stepped) and minimizing the power consumption in laptops (usually with speedstep). There are a series of entry-level processors which can address both needs, and in one of them the desktop version sacrifices speedstep but gains 64-bit operations and the option of one or two cores and twice the cache, whereas the laptop version sacrifices 64-bit operations, dual cores and large(r) cache, but gains advanced speedstep. The laptop version has a target power consumption of only 4 watts, which is about one-sixteenth the power consumption of a typical Core 2 Duo. A new power management architecture is needed to address this, and for this purpose, 10.5.6 will have some dramatic changes under the hood. This has got a number of software vendors waiting until 10.5.6 is out before they finally update their products to work with the new (power) paradigm. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
