One more thing I would like to note, this Quad is 1yr old and has only been shut down few times and almost never in deep sleep mode meaning 1yr of consistent use. I'm not happy about these cpu temps but I'm glad the Quad isn't freezing and having Kernel panics. Here is my new idle temp with the replaced cpu unit from the Apple store The Quad used to have a "deep-low-grunt" sound when started up, and now it has a higher pitch sound when started up.īefore I sent you my idle temps in an E-Mail, here are those temps I don't know how many pumps I have now but one thing is for sure, the Quad sounds "wimpy" now! Picked it up from the Apple store on the 29th of March and I guess they replaced the whole assembly of the processors and water pumps (I had forgot it was all 1 unit) and my model was the one with 2 water pumps. This past month made my G5 Quad 1yr old, and I had water pump failure which was covered under warranty. (With a balanced load for say 1/2 hour or more is there still a large difference in temperatures between CPUs?) I thought the difference in CPU temps was due to the fact that often one CPU is loaded more heavily than others, but you mentioned a balanced load. They'll also suggest some troubleshooting tips like removing any 3rd party RAM, resetting SMU/PMU, etc.)Įven the temperature reports on the Mac Pros show different temperatures on CPUs (and memory modules) although the (pre-8 core models at least) seem to run cooler than the Quad G5s. If it's still under Applecare warranty I'd call them about the lockups running AHT (I'm assuming it's not leaking any coolant?), but as far as CPU temperatures, I suspect they will just say that's within spec (if not overheating and assuming you have no coolant leaks, check for that before calling them. ( maybe a corrupted file or drive problem? Did you check the logs for any related errrors?) Starting from a clone and running TechTool: the hardware tests are OK. Start with the AppleCare Disc (which contains TechTool Deluxe) causes kernel panic. And noisier.This problem appeared two weeks ago.Īpple Hardware Test freezes on checking the Logic Board. And the fans of both proc run at the same speed, and immediately faster than before. There is a permanent difference in the temperatures : CPU A (Core1 and 2) runs 12-15 deg C hotter than CPU B. "I have the same problem with my Quad (built in december 2005). (If you don't have Hardware Monitor, there's a Temperature Monitor from the same author.) If any other Quad owners check their reported temps or have had any sensor or cooling differences like this, let me know. Quad G5 Owner Replies: (later reports first) I tried the PMU reset, machine sat unplugged for 4 hours - no luck. I contacted apple and they gave me no info, they simply suggested taking my machine to the closest service center for diagnosis (unfortunately that is 76 miles from my school, where I currently reside without a car). They used to idle at about 900 rpms, seems to be stuck around 1500 now (noticeable louder). It seems the raised temp of CPU A causes the fans and pumps for BOTH CPUs to run faster than normal. I noticed today shortly after reporting this problem to you that my fans ARE in fact running higher than normal. When ALL processor cores are at 0-3% (Idle) the problem still occurs. There is no additional load on that processor, that was the first thing I thought. ( Although he said it ran hotter regardless, I asked if one CPU showed a higher load than the other.) My main concern arises at the fact that this processor used to run between 90 and 150 degrees F. I was wondering if anyone else had an issue like this, and if so, any suggestions on what the cause might be. I posted more details details on apple's support forum:ĭ/thread.jspa?threadID=419032 ( No longer online.) CPU A runs between 15 and 25 degrees hotter! This happened suddenly one day, no software/hardware/peripheral changes were made. Sure enough, regardless of load, fresh installs, different software, etc. Since the system was idle, It concerned me and I investigated further. "A couple days ago I noticed that Hardware Monitor reported one of the processors on my quad was running 20 degrees F hotter than the other (both cores). (Copy of the post in the main news page for context) PowerMac Quad G5 CPU Temperature Sensor Readings Mac Upgrades/Repairs | Storage | Video | Audio/Home Theater | OS Updates/Tips/Wi-FiĪpple Quad G5 CPU Temperature Sensor Readings Quad G5 CPU Temperature and Fan Speed readings
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