As an owner of several liquid G5s (although no quads; all Delphi systems), I have never had any issues (although with the number of G5s I have and their age, law of averages says I should be in trouble soon). I have, however, seen one that has had these issues, and it's fairly obvious when you open the case and remove the side panel. The key to successful maintenance of a Delphi water cooling system in G5s is to ensure that the computer has time to cool off (idle, sleep, or not be on) after prolonged periods of high CPU usage. If the computer has ambient temps above 70-75F, try to keep it cool by aiming fans at open side panel and back. Do not remove the side plastic panel during operation because it routes the air very well. If you do these, Delphi systems should work well; they tend to fail only if used significantly more than average for their time (but as we strain duals and even quads more and more, this becomes less and less by modern technology standards).
-- -- Illirik Smirnov On Sat, Jan 14, 2012 at 2:58 PM, Jack Countryman <jcoun...@mac.com> wrote: > If you can go look at it in person, as opposed to buying blind over the > net, I'd look very carefully at the liquid cooling system, checking for any > evidence that coolant has started to leak, or run down inside the case. > Best option might be to pull processors and the power supply to look > closely at those as well as the inside of the case, but doubtful they will > let you do that prior to a sale. Check which cooling system is in > there...Panasonic is probably a plus. Though I've got a dual 2.7 with a > the Delco/Delphi system that has no problems so far (knock on wood). If > possible, get them to start it up and smell around that part of the > machine...or for that matter smell even if not running, as the odor of > burning antifreeze is distinct and lingers. > > -- 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
