I currently have 5 G5s Quads and one 2.7ghz. All my G5 Quads have the older Delphi system and my 2.7ghz has the Panasonic system (from what i remember the 2.7ghz has it). I read that the Panasonic system was used in the late 2005 G5 models and that the early 2005s had the Delphi systems. Yet somehow my Late 2005 Quads have the Delphi systems. All of my G5s where certified refurbished from apple, is this why the LCS could be mixed up between all my G5s? I did however just check my G5 Quad that I am using right now to wright this up and it says its a Delphi sticker right on it and right on the CPU its labeled September 7th 2006. That must be the date this one was refurbished i guess??? Since there's no way apple made the G5 then since the Mac Pro was already out. If anyone can help me figure this out I'll really appreciate it i been thinking about this for ever.