Quad Idle Fan noise?
I own several powerbooks and recently bought my first PowerMac.
The Powerbooks are silent.
The Quad makes fan noise. It's not very loud, but the fans are clearly running. I can feel cool air from the front vents. Normal?
I have installed a second internal drive (Hitachi) and 4 gigs of Crucial RAM.
The machine was silent until I loaded on Photoshop, FCP and several other programs. But I really haven't used any of the programs yet.
Since I have not done any serious work on the machine yet- so I am not sure if this normal idle noise or something else.
Should an idle Quad be fully silent?
Thanks
My Quad is much noiser than I expected. My PowerBook can barely be heard. My iMac (since replaced by the Power Mac) was Rev. A and suffered from the known noise problems but was quieter than the Power Mac. Are these fan speeds typical? (Obtained from Marcel Bresink's Hardware Monitor utility.)
2006-01-10 09:02:25 -0600
Air Tunnel: 37.6℃
Air Tunnel Heatsink: 38.2℃
CPU A Core 1 Diode: 35.1℃
CPU A Core 2 Diode: 35.4℃
CPU B Core 1 Diode: 40.0℃
CPU B Core 2 Diode: 38.3℃
Drive Bay: 29.0℃
Graphics processor chip: 46.0℃
Main Logic Board Air Inlet: -60.0℃
Main Logic Board Backside: 39.6℃
Memory Controller Diode: 53.0℃
SMART Disk Hitachi HDS725050KLA360 (KRVN23ZAGD4LRD): 31.0℃
SMART Disk ST3300831AS (5NF00ZC6): 30.0℃
CPU A Core 1 Voltage: 1.16 V
CPU A Core 2 Voltage: 1.16 V
CPU B Core 1 Voltage: 1.17 V
CPU B Core 2 Voltage: 1.18 V
CPU A Core 1 Current: 9.03 A
CPU A Core 2 Current: 8.91 A
CPU B Core 1 Current: 10.25 A
CPU B Core 2 Current: 8.91 A
Slots Power: 131.0
CPU A Exhaust Fan: 1000 RPM
CPU A Intake Fan: 970 RPM
CPU A Radiator Pump: 1250 RPM
CPU B Exhaust Fan: 1000 RPM
CPU B Intake Fan: 970 RPM
CPU B Radiator Pump: 1250 RPM
Drive Bay A Air Intake: 1000 RPM
Expansion Slots Intake: 1560 RPM
Main Logic Board Backside: 1100 RPM
Power Mac G5 Quad and PowerBook G4 Mac OS X (10.4.3)
Power Mac G5 Quad and PowerBook G4 Mac OS X (10.4.3)
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http://s000.tinyupload.com/?file_id=05993774904232412088
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Hello,
My MBP has recently started emitting a constant noise as if the fan is rubbing. Have a listen to the noise here: https://soundcloud.com/adam-wilkie/fan-noise-2/s-VnBbe
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Therefore if you are actually using canned air to keep the fan and vents clean from dust and grime, and you have a cooling pad and it is still noisy, then it is probably a dysfunctional fan.
Now you can send it back in if you have a warranty on it. If you don't you, could replace the fan yourself. If you choose to do this, there needs to be further discussion.
Let us know if you are using canned air: remember spray for only 2 to 3 sec at a time to prevent any harm to your hardware.
Noise from fans can come from the dust particals that get into the fan bearings.
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I have been in this business for many years and have worked with every brand of computer known to man;
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I am speaking from pure experience.
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G5 Users: Are you experiencing Fan Noise?
Simple Question,
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Mac Pro 2x2,8 Ghz - Fan Noise - Please help evaluate
Hi Guys,
Since yesterday, I'm the proud owner of a Mac Pro 2x2,8 - Really happy - really nice machine.
However I'm slightly irritated by the posts I've read all over the internet, saying that you can't hear the fans of this machine at all in idle.
As you may have guessed, my box is not silent at all - it is quite quiet compared to other noisy PCs, yes, but no match for the previous iMac 24" which it replaced. You could hardly hear the iMac versus now the Mac Pro... you notice it's there... sitting under the desk - audible.
I realize that fan noise is highly subjective, and I'm using the Mac in a completely silent environment. No AC, no nothing. I've tried the following: removing the hard drive and silencing the graphics card... Upon bootup the Mac would quickly "turbo" it's fans and then go to it's normal state. The loudest fan (which is drowning out all other noise) is the one at the bottom front (CPU?).
Looking at istat, it's in normal parameters (500rpm or so) and doesn't move up or down...
Comparing it to other devices, it would sound like a PS3 when having played 1 hour (fan speed at level 2-3) or an (quiet) xbox in idle mode (dvd not spinning). I know... geeky comparisons
Now, again - not close to my interpretations of "whisper quiet" "can't hear it at all"... "only hear it when I put my ear to the grill" "sounds like it's cooled passively"
Which makes me think that either
a) people out there are deaf /
or
b) my Mac needs a closer look by a genius
Would really appreciate your opinions.
Thanks,
Tomhey tom,
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but i'd like to know if others are having this problem
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jayson
www.oldchildprojects.com
Message was edited by: woodybrando -
Probably similar to this thread, the T530 I recently received has fan noise issues. I've invested considerable time in solving this, but found that a solution can be achieved with reasonable effort only by Lenovo:
Introduction:
Most ThinkPad models do not provide the operating system (or the user) the ability to set the fan speed directly (e.g. in rounds per minute) or in a fine-grained way (e.g. as a percentage of maximum speed). Instead, there are "fan speed levels", usually 9 levels (level 0 through level 7 as well as the level "disengaged"). For each level, a particular fan speed is defined and the Embedded Controller tries to achieve this particular fan speed by measuring the fan speed and adjusting the electrical properties of the fan (e.g. voltage or pulse length or something like this).
The fan noise problem:
Every time the internal temperature sensor reaches 50 °C or so, the fan starts with about 1900 rounds/minute and then quickly goes to about 2737 rounds/minute, where it is loud. Then it takes about 20 seconds, the temperature drops to 45 °C, then the fan is switched off. Then, after maybe other 30 seconds, the cycle repeats and the fan is switched on again, ...
There are major problems with this behaviour, because:
The fan is not running continously, but pulsating.
The fan is running at level 1 at a much higher speed than needed, creating unnecessary noise.
I have measured the individual fan speeds for individual fan speed levels:
The fan speeds at different levels are as follows:
Level 0: 0 rounds/minute
Level 1: 2737 rounds/minute
Level 2: 2944 rounds/minute
Level 3: 3033 rounds/minute
Level 4: 3074 rounds/minute
Level 5: 3597 rounds/minute
Level 6: 3773 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution draft:
A minimum solution to the problem above would be introducing another fan speed level between 0 rounds/minute and 2737 rounds/minute, with about 1900 rounds/minute. The reason this makes a difference is that there is a fundamental difference between laminar flow and turbulent flow, where the laminar flow makes nearly no noise and the turbulent flow makes a lot of noise. (Whether an airflow is laminar or turbulent is easiest influencable by affecting its speed.)
As you can see on the observed mapping from fan speed level to fan speed, level 6 and level 7 map to the same speed.
Thus, no particular fan speed would be lost if the mapping would be changed to the following:
Level 0: 0 rounds/minute
Level 1: 1900 rounds/minute
Level 2: 2737 rounds/minute
Level 3: 2944 rounds/minute
Level 4: 3033 rounds/minute
Level 5: 3074 rounds/minute
Level 6: 3597 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution implementation by user is impossible:
The problem, however, is that, while a user can decide which fan speed level should be active at a particular time, the user cannot decide which fan speed should actually be achieved for a particular level. Thus, the user can either decide to have 0 rounds/minute (which is not particularly sustainable, because the equipment becomes hotter and hotter) or to have 2737 rounds/minute (which is not particularly sustainable either, because both the user and other people arund the user's Lenovo computer are distracted from work).
The mapping from fan speed level to fan speed is actually stored in the Embedded Controller Programm ("ECP"). This Embedded Controller Programm is freely changeable or configurable by the user. Only Lenovo has the source code to this Embedded Controller Programm, and actually only Lenovo may know how to disassemble such a binary Embedded Controller Program in case the user wanted to change it. Thus, even advanced users cannot fix this problem by fixing it where it should be fixed.
It should be noted that, because fan speed is a long lasting issue at Lenovo, a third party has been even developed an after-market hardware solution: TPFC. However, this solution probably voids the warranty, and it work arounds the problem at the wrong place, and it costs time and money and effort to actually install it.
Only Lenovo can fix this problem:
How Lenovo should fix the problem
Thus, this is my call to Lenovo to fix this problem (at least for the T530 series, but probably W530, T430 are also affected). Ideally, the solution should be as follows:
Change the Embdedded Controller Program such that the mapping from fan speed level to fan speed is as follows:
Level 0: 0 rounds/minute (no noise level)
Level 1: 1500 rounds/minute (low noise level, sweet spot)
Level 2: 1700 rounds/minute (low noise level, sweet spot)
Level 3: 1900 rounds/minute (low noise level, sweet spot)
Level 4: 2100 rounds/minute (some noise level)
Level 5: 2600 rounds/minute (high noise level)
Level 6: 3100 rounds/minute (high noise level)
Level 7: 3773 rounds/minute (high noise level)
Level disengaged: 4754 rounds/minute (high noise level)
The reasons for this fan speed design are as follows:
The "sweet spot" where both the fan will run most of the time and where the user would not complain is between 1500 rounds/minute and 2100 rounds/minute. If the fan needs to be faster to keep the system cooled, then the user is likely to run the system with considerable load to CPU or GPU. In this case, there is no option to reduce the fan speed, but also in this case, the user probably accepts the fan noise for the computing power delivered.
The "sweet spot" in terms of CPU load is where the users do not accept fan noise while actually generating only minute CPU load (e.g. during web browsing or writing documents, where the CPU and the GPU is mostly idle). For many users, this is their normal working state (e.g. working in a quiet office, a very quiet library, a quiet bedroom, a quiet boardroom, ...). These scenarios are where Lenovo ThinkPads currently fail to deliver, unnecessarily
The "sweet spot" needs higher resolution (more fan levels allocated to these fan speeds), because slightly different load patterns may make it necessary to go from one level to the next higher level, but then the next level still should be bearable. Conversely, the higher levels (e.g. from 2600 rounds/minute on) do not need such a high resolution, because for most of the users, these levels will be only attained rarely anyway, and then they are accepting the noise.
Currently, there is no fan speed level at the sweet spot. With the proposed fix, there would be 3 fan speed levels at the sweet spot, with a neighbouring fan speed level (2100 rounds/minute) still being bearable when considering the performance delivered.
There is no fan speed level below 1500 rounds/minute. This is ok, because the fan is nearly inaudible at this speed anyway, and below a certain speed, there is a risk (depending on the fan) for the fan to actually not rotate at all (e.g. due to friction).
How much time and effort would Lenovo need for fixing the problem:
The Lenovo engineer responsible for the Embedded Controller Program of the T530 should need less than one day to change the source code of the Embedded Controller Program and to recompile it. The engineer may need one additional day to test this program (e.g. for different types of fans), and there may be a need for an additional day to release the update to the BIOS and ECP. All in all, Lenovo should not need more than 3 engineer-days (maybe worth 1800 USD) to fix the problem.
Why Lenovo should fix the problem:
Probably the whole current T series (T530,T520,T430,T420) as well as the current W series (W530,W520) fails the users in any of these scenarios (among others):
User working in a quiet office.
User working in a quiet library.
User working in a quiet bedroom.
User working in a quiet boardroom.
Thus, the Lenovo T series is currently not usable for many business users and almost all students. This problem should cost millions of USD of revenue, while fixing it would cost it maybe 1800 USD.
Incidental remark: Lenovo subsidiary can do better:
Lenovo has bought the majority of the Germany consumer electronics company Medion. Medion currently offers a consumer level notebook "E7222" for 499€ including German VAT. Despite of this low price, this notebook delivers very good fan control (that is: the notebook is nearly silent when the CPU is near-idle). (However, being consumer-grade, it does not offer a docking-station or a FullHD screen or WWAN.)
What will I personally do:
Some weeks ago, I had a powerful W530. I returned it due to fan noise for cash refund. Now I have the T530 (Serial number: R9RRF26) which has exactly the same problem. The deadline until I can legally request a cash refund runs until 2012-09-07. I hereby ask Lenovo:
To fix the problem and release an ECP or BIOS update until 2012-09-06 (it is doable, see above) or
if the problem cannot be fixed in this time (e.g. due to bureaucracy): provide me with a written statement (e.g. e-mail or forum post is sufficient) that my legal cash refund deadline (German law: §355 BGB) will be voluntarily extended by Lenovo (to some date Lenovo thinks it needs to fix the problem).
If none of the above happens, I will have to return the T530 as well. This is the 2nd chance Lenovo has gotten from me, there will be no 3rd chance. I would have to turn to Fujitsu (they do have business-class machines with big batteries, FullHD, WWAN) and they probably have better fan control.
Solved!
Go to Solution.kaawee,
Thank you for the considerable thought that you put into your summation / analysis and proposal for a change.
I don't agree that you are wasting your time as we did make EC changes on the X220 and T420s to change fan behavior (along with several other systems). However, not all customers agree that the changes made the system behave the way they wanted and were completely satisfied (hence some of the dissenting opinions expressed here).
We are interested in feedback on T530, W530, T430 fan concerns and we are investigating. It is possible that a future change might be made, but I cannot say for certain that it will, nor can we commit to making this change within 4 days (2 now remaining) from your original posting.
Best regards,
Mark
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
twitter @lenovoforums
English Community Deutsche Community Comunidad en Español Русскоязычное Сообщество -
2 years of this fan noise....check my temperature?
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Why do I have fan noise after OS 10.7.5 update?
I used to have moaning sounds coming from my Mac Pro (Quad Core, early 2008) when I was in motion graphics programs, or in NetFlix. But ever since I updated to OS 10.7.5 3 days ago, the fan moaning is incessant. Help! I just spent $200 on an old geezer "official Mac" technician, who came to my home office and spent 2 hours doing DiskWarrior!
I am so busy right now, I can't stop to take the tower to a local authorized shop. Will the noise sink my CPU? What is causing it? Is it a glitch in OS 10.7.5? Or do I need new fan(s)?
Anyone hear complaints of sudden incessant noise other than mine?I used the following:
Copy and past the following in terminal followed by your password when asked for:
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
Note that if you've got anything listed in the Spotlight control panel in Privacy, it will be deleted.
To turn it back on (which I haven't tried yet since I don't use Spotlight):
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
When Spotlight is frantically reading everything and indexing it, a lot of CPU % is used, and the HD is being exercised too. That generates heat and could be the cause of the increased fan noise when your Mac Pro speeds up its fans to try to protect itself. 10.7.5 seems problematic in this respect and since your noise problem started after the 10.7.5 update, the two might be connected. Apple tends to run a Mac Pro's fans very slowly to keep the machine quiet, so any speedup would be noticeable. -
I'm due for a new battery and I was wondering if that was causing a loud fan noise.
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77 cvmsServ root 0.0 864 KB 2.33 GB
87 coreaudiod _coreaudio 0.0 4.7 MB 2.36 GB
91 launchd izamarvira 0.0 1.2 MB 2.36 GB
95 Dock izamarvira 0.0 16.0 MB 2.69 GB
96 SystemUIServer izamarvira 0.0 19.2 MB 2.71 GB
97 Finder izamarvira 0.1 41.7 MB 2.77 GB
101 pboard izamarvira 0.0 860 KB 2.32 GB
106 fontd izamarvira 0.0 12.4 MB 2.40 GB
111 UserEventAgent izamarvira 0.0 6.7 MB 2.37 GB
119 AirPort Base Station Agen izamarvira 0.0 5.7 MB 2.64 GB
124 netsession_mac izamarvira 0.2 12.6 MB 803.7 MB
125 netsession_mac_da586ac izamarvira 0.0 12.6 MB 801.3 MB
131 WD Quick View izamarvira 0.0 17.4 MB 970.7 MB
135 GrowlHelperApp izamarvira 0.0 13.1 MB 2.64 GB
138 Monitor izamarvira 0.0 9.1 MB 970.7 MB
140 Dropbox izamarvira 0.1 67.8 MB 1.04 GB
143 AAM Updates Notifier izamarvira 0.0 10.6 MB 944.5 MB
181 dbfseventsd root 0.0 364 KB 582.8 MB
182 dbfseventsd root 0.0 4.3 MB 590.8 MB
183 dbfseventsd izamarvira 0.0 168 KB 582.8 MB
204 Image Capture Extension izamarvira 0.0 6.6 MB 2.64 GB
243 AppleSpell.service izamarvira 0.0 6.7 MB 2.37 GB
491 mdworker izamarvira 0.0 21.9 MB 2.38 GB
506 ocspd root 0.0 2.5 MB 2.37 GB
529 diskimages-helper izamarvira 0.0 13.8 MB 2.38 GB
534 hdiejectd root 0.0 1.7 MB 2.35 GB
611 Preview izamarvira 0.0 23.8 MB 2.70 GB
715 diskimages-helper izamarvira 0.0 13.9 MB 2.38 GB
802 Google Chrome izamarvira 0.7 230.0 MB 1.48 GB
805 Google Chrome Renderer izamarvira 0.0 88.1 MB 1.11 GB
808 Google Chrome Helper izamarvira 0.0 44.1 MB 1.05 GB
813 Google Chrome Renderer izamarvira 0.5 76.9 MB 1.10 GB
816 VDCAssistant izamarvira 0.0 4.2 MB 2.62 GB
917 Silverlight Plug-In (Chro izamarvira 11.5 215.8 MB 1.36 GB
919 Google Chrome Renderer izamarvira 0.1 134.6 MB 1.18 GB
920 PepperFlashPlayer (Chrome izamarvira 1.6 145.3 MB 1.22 GB
944 Google Chrome Renderer izamarvira 0.3 93.1 MB 1.12 GB
958 Google Chrome Renderer izamarvira 0.1 73.7 MB 1.11 GB
960 Activity Monitor izamarvira 4.2 21.6 MB 2.74 GB
962 activitymonitord root 0.6 1.3 MB 2.33 GB
963 Quick Look Helper izamarvira 0.0 5.9 MB 2.87 GBHi,
I had the same problem, one of my fans was making a loud noise even when my computer was just idling. It can occur because you dropped the computer, thus damaging one of the fans, or the fan broke down partially. I took mine to the Apple genius bar and they ordered a new fan for me and installed it in under a week (all covered by warranty). This is likely a hardware and not software issue, the only way for a fix is taking it to a genius bar. -
DM3 (New 2010 model) - FAN NOISE - Constantly Running LOUD
This is the first HP to use "Cool Sense" technology. Yes, it is cool but at the expense of FAN NOISE. The fan runs constantly even when Thermal Assistant is set to "Quietest." Just an open browser window at 0-10% cpu makes the fan run all the time! PLEASE READ my Notes below.
After monitoring the temps, the fan still needlessly runs on medium speed even after the temperatures drop (CoreTemp gives [core#0 28C & core#1 37C] at idle powersaver). Anyone can comment on the 9C difference?
I believe hp still need to tweak the "Thermal Assistant" fan controller or raise the temperature thresholds. PLEASE HELP - VERY ANNOYING PROBLEM
Note: Latest F.08 bios & Turned OFF "Fan Always On." Computer is NEW (no dust). Used on Tabletop. Used both powersaver mode & balanced.Try doing a SMC AND PRAM reset by:
1. Turn off your iMac and unplug everything from it for 30 seconds.
2. Plug in the power cord, keyboard and mouse only.
3. Press the power button and immediately hold down the Option, Command, P & R keys until you hear the second gong then release the keys. Your machine will start up normally, then check for the issues you are having.
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