OS X :: CPU Running At Constant 45% Since 10.6.6 MBA Fans Running?

Jan 6, 2011

Since I updated to 10.6.6 earlier today I've noticed that the fan in my MBA (13" late-2010 model) is running constantly. This is rare -- I hardly ever hear it. I opened activity monitor and 'System' is using 45% CPU time, and it's pretty constant.

I have absolutely no clue why -- there's nothing in console to suggest it's doing some task, and I can't see any other hints. Apart from the noise and the heat (though don't get me wrong -- compared to my old MBP it's not really noisy or hot, but I liked it better when it was totally quiet and cold), it's also killing the battery -- 25% has gone in less than an hour.

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MacBook :: Fan Running At High Speed / Making Superloud Constant Sound

Dec 13, 2009

I just bought the macbook 13" (white casing) today and the first thing I noticed when I turned it on was the fan, it was extremely loud!! I let it run for awhile and it was still constantly loud. Then I tried rebooting twice and still the same problem. My room is only around mid 60F. Is there some function I'm supposed to turn off? Or did I get a lemon macbook?

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Mac Pro :: Why OWC RAM Running Hot / Fans Not Increasing

Feb 15, 2008

My OWC RAM is working just fine, but I am growing increasingly concerned about the temperatures at which it runs. I have the 3.0 (120W) MacBook 2008 with 18 Gb RAM (4x4Gb + 2x1Gb apple stock). The RAM in memory module A2 & B2 is getting up to 80 Celsius without even much of a workout on the RAM. What's more, the MacPro fans are not increasing - right now the hottest module is at 76 Celsius and fans haven't increased at all (see screenshot below).

I have installed SMC fan control, which I understand is supposed to set the minimum fan speed, which I have set at 730 because my RAM was running hot even without any workout. How concerned should I be about this? Is this a) a defect in my mac pro b) a design flaw c) a problem with OWC memory, or d) is everything OK and I'm making a mountain out of a molehill?

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Mac Pro :: Its Fans Running Randomly

Apr 17, 2012

Well my MacPro 2009 has this weird error where the fans will kick in and a restart wont restore them to normal a sleep cycle will though. It seems to only happen with OpenCL intensive apps but not Cuda intensive apps?? this may be random coincidence.

Info:Mac OS X (10.6.8)

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MacBook Pro :: Why Fans Running So High?

Dec 25, 2010

Both of my fans are running at the max 6200 RPM and have been for well over an hour. My CPU is over 65% idle, and none of my processes are over 20%. My HD Temp is 38 degrees and my CPU temp is 72 degrees. I don't think my fans should be running this high considering the computer is doing so little work.

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PowerPC :: G5 Fans Constantly Running At 4K

Jan 19, 2009

My PowerMac's (G5 Dual 1.8GHz procs) fans seem to run at a solid 4k rpm's regardless of what I'm doing, even with CPU usage set to low. I've taken the whole machine apart, cleaning it with canned air and such, but the problem just won't leave me be. The air coming out of the machine is ice cold, and the temperature readings I'm getting are about 86 degrees F for the CPU's and 70 for the HDD, so I'm not sure what gives.. Slot and Backside fans are running at 255 rpm, but the others are all 4k.

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PowerPC :: G5 Pro Fans Running Too Fast

Jul 28, 2009

The fans on my G5 Pro are running at close to 3000rpm most of the time. I have read other forums and do not think this is normal at all. I started looking into the fans because I am getting frequent kernel panics (black screen crashes) and thought it might be the machine over heating. My CPUs are at about 50C to 52C and the fans are constantly running that fast.

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MacBook Pro :: Fans Running More And Bit Louder

Apr 15, 2010

I own a Macbook pro 17" core duo 3.06Ghz. I am very happy with the machine, but since a few months the fan's are louder and on much more often then ever before. (the first half year it was always silent) I remember there was some reset for this.

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OS X :: MacBook Pro Shut Down But Fans Still Running

Aug 23, 2010

Like 3 days ago I shut down my macbook pro normally. I closed the lid and I noticed that the sleep indicator light was on. I opened the lid and the light went off. I closed the lid again and the light went on again. I got closer to the computer and the fans and drives inside were still running. The only thing I did was to hold the power button down until it shut. This has happened to me 3 times already. I'm kind of worried because I got the computer 2 weeks ago and I'm really happy with it. My computer is a 2010 13' Macbook Pro running Snow Leopard, not sure what version it is.

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Macbook Pro 4.1 Fans Running Constantly

Apr 21, 2012

I've just bought a second hand macbook pro, the battery is dead which is easy to replace i guess but worse the fans are running constantly at around 6000rpm.I've tried resetting the smc and pram but that hasn't helped.I tried to run the hardware diagnosis but that freezes when it gets up to testing the logic board and i have to pull the power adapter to turn machine off.I only have the second of the two install dvds and machine is running os x 10.5.8

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MacBook Air :: Fans Running All The Time

Jun 25, 2012

why is my mackbook air fan running all the time?

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PowerPC :: Powermac G5 CPU Fans Running On Different Speeds?

Jul 3, 2007

CPU cooling fans are running at strange different speeds. Powermac G5 early 2005, dual G5 (not dual core).This is at idle:CPU A 60 degree Intake 300rpm Exhaust 300rpmCPU B 63 degrees Intake 1125rpm Exhaust 1100rpm! I have not noticed this before. They usually remain identical.

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Mac Pro :: Fans Running At Full Speed Non Stop

Mar 27, 2009

Brand new 2009 octo, with the 2.2x ghz CPUs. Turn it on, start NO apps. Let it sit idle. Within a few minutes the fans ramp up to FULL jet engine speed. I can't hear people on the telephone. And never stop. Let me reiterate that I am running NO apps. My load averages are in the zeros.

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MacBook Pro :: Fans Running High All Time

Feb 24, 2012

Last summer my MBP 2.3 GHz C2D was heating up so much, you barely could touch it. So I decided to give it a little hardware checkup. Finding the fans completely stuffed with dust

But after a while i recognized that the fans went on high rpms (around 6000) already at startup and did not lessen anymore. I do not have any high capacity processes running and the temperatures are not just not warm buth rather chilly, so no need for high fan speed. Now I want to solve this problem as well but seemingly nothing will work.


Info:MacBookPro, Mac OS X (10.7.3)

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Intel Mac :: Fans Running At High Speed?

Mar 17, 2012

My iMac (intel core duo) after a hard drive replacement seems to be running the fans at a high rate of speed.  Usually just a few minuets after startup. Before the upgrade they were almost silent and now they are very noticeable. I need to get taken care of or just a result of installing a larget hard drive? 

IMac Intel Core Duo, Mac OS X (10.4.10), Ipod 30 Gig, BMW IPod Integration, .mac

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MacBook Pro :: Fans Too Noisy - Running At 2K RPMs

Apr 12, 2012

My fans have always been running at 2000 RPMs. I downloaded an app from the mac app store which caused the CPU to overheat, and in order to control this I read that it was wise to download smcFanControl. I downloaded this and added 2 settings, 2.4K RPMs and 2.8K RPMs. This worked to cool down my laptop, and once I realized that my CPU is at 36 degrees Celsius, I set the fans back to the default settings at 2000 RPMs. Now, my fans are constantly running at this speed according to smcFanControl and iStat. My core is cool, not even warm, yet all I can hear are the fans spinning fast to push hot air out of it, when there is none (I've put my ear to it to hear and feel the heat, there is no heat coming out).

I've had this laptop for less than 24 hours, it's a:
15' Macbook Pro late 2011
Intel Core i7 Quad Core 2.4gHz
7200RPM 750GB HDD

Also, this was not occurring prior to downloading smcFanControl (I've turned it off, deleted it, nothing works) - Even after turning off the laptop, the fans stopped, automatically after turning the laptop on the fans came back on. Some extra information: When I put my ear to the bottom of the laptop, it sounds like a vibration.

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Intel Mac :: Fans Running At Full Speed?

May 18, 2012

Machine: iMac intel core 2  2.66Ghz Model A1224

sn# YM******ZE3 

Ran the hardware test by pressing 'D' key. hardware test came back with error :4SN/1/40000000: T00P-65.250 

I am guessing some sort of temp sensor might need replacing. 


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PowerPC :: IMac G5 Fans Are Running Out Of Control Constantly?

Jul 8, 2007

What is wrong with this picture? The fans are running out of control constantly. This machine is sooo loud. The power supply was just replaced, which did little/nothing. Reset all ram/etc.

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MacBook :: Machine Fans Running At (6200RPM) Max Speed

Jan 5, 2009

I was just wondering if it's okay to run the MacBook with the max fan speed (6200RPM) at all times? It's really hot nowadays and my MacBook runs at about 60 degrees Celsius idle. If I run a few CPU intensive apps, the temperature usually rises to 70-80 degrees. This is with the fan running at max speed. So what I want to ask is, will it be okay to keep the fans running at max speed at all times? I'm going to get a notebook cooler soon so that should help with lowering the temperatures a little lower.

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MacBook Air :: What Speed Are Your Fans Running On MBA Rev B When Watching HD Video

Feb 16, 2009

If you are watching HD video, CBS.com HD shows for insteance.What speed are your fans running then and what temperature does your MBA Rev B have?

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OS X :: IMac Fans Running At Full Speed - Reset SMC?

Feb 28, 2009

I've got a little problem with my iMac 24" 2.8 GHz Nvidia Geforce 8800GS 500GB. When I start it up, the fans start blowing at full speed. I checked the apple support page for support and found my problem with all the symptoms being correct. The support said I had to reset the SMC by shutting down the iMac, then removing the power cord and all the other one's, wait 15 seconds and then put the power cord and the other one's in respectively. I did this almost 10 times, but my iMac still won't stop making those annoying noises. Maybe it has to do with the SMC fancontrol app my brother installed lately.

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MacBook Pro :: High Pitched Noise When The Fans Are Running Around 6.2k RPM

Jul 1, 2009

It's the 2008 model MacBook Pro with the 9600m gt 512 card.

So, I just noticed that when I have my MacBook Pro in High Performance mode it emits an high pitched noise when the fans are running around 6.2k RPM and the CPU and GPU is around 63c. The noise follows the speed of fans, and at idle the noise is gone.

I have uploaded a video of it on youtube here: http://www.youtube.com/watch?v=HioRgTNpNRA

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MacBook :: Fans Running All The Time - Heatsink Minus One

Aug 6, 2009

For the past couple of weeks I've noticed that my old white macbook is running hot, and browsing has been kind of slow. I don't see anything out of the ordinary in the processes, but Heatsink A is reading -1. Should I just pull the machine apart and see if something isn't connected anymore? I installed a 7200 RPM HD a few months ago, but this problem is more recent.

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Intel Mac :: Fans Running Loudly With Snow Leopard 10.6.8

Jun 23, 2012

My mac just blew out a lot of dust and now the fan is very loud.

iMac, Mac OS X (10.6.8)

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MacBook :: Overheating And Shutting Down On YouTube - Fans Not Running?

Jul 5, 2012

My Macbook's been overheating and shutting itself down the past two days, usually when on YouTube. Having installed the Fan Control system preference, I can see the fans aren't running at all.My first thought is that they might be broken, but this happened for a little while last year, too, and the fans started working again after a while. Also, it's been miserably hot in my area the past week, and I wonder if that's contributed to it, too (even though the laptop's in an air-conditioned room).Anyway, should I wait and see if the fans begin working again, take it to a repair shop (warranty's expired, so I'm not keen on that), or maybe buy a cooler pad?

MacBook, Mac OS X (10.5.8)

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Desktops :: Graphics Card Heating Up / Fans Running Very Fast

Sep 7, 2010

I'm worried about too much heat and wearing out fans in both the card and my Mac.Below are the conditions, but first:

-Is it normal for this kind of card to run ALL the time? How do I know if it's acting correctly?
-Given the heat and fan speed info below, are my Mac and internal drives OK?
-Am I risking any breakdowns? Due to heat or fans running too much... or?
-Do all graphics cards cause the fans to run like this? Is there a cooler card out there?
-Suggestions to lessen the heat effects... or for another alternative?

MacPro Xeon / Dual 2.66 processor / 4 GB RAM
Radeon HD3870 Card in Bottom slot
E-Sata card in top slot.
No other cards installed
4 Terabyte Internal Drives

Temperatures (in fahrenheit): (via iStat widget)
HardDrives: 110 / 104 / 108 / 97
CPU A: 95
CPU B: 92
Expansion Slots: 95
Ambient: 76

Fan Speeds:
Exhaust: 599
CPU Fan: 499
Power Supply: 599
HD/Expansion: 501

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MacBook Pro :: I7 Unusually Hot To Touch - Fans Running Super Loud

Sep 15, 2010

So I got my macbook pro yesterday and I've been doing some basic stuff on it. While I was installing World of Warcraft, the computer jumped up about 101 degrees celcius. I know I shouldn't trust istat pro 100% but still, my fans are running super loud and the computer is very hot to touch. I'm not running any heavy programs or doing any gaming. I had Aol Instant Messenger on, and WoW instaling in the background. I'd like to also add that when opening various programs I get the spinning beachball very often.

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Mac Pro :: System Fans Running At High Speed / When Wake From Sleep

Feb 8, 2007

I have a MacPro 2.66 quad-core intel. 4gb ram. I have a hard-drive from my old Powermac that i upgraded to 10.5.5 for this computer. Everytime I put my computer to sleep, and then wake it back up. The fans spin up to maximum speed and all the fans are running really loud and then after about a minute all spin to normal speed.

I don't have any other flaws except for this. Why could this be?

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MacBook :: Temp Go Up Absurdly While Running VisualHub / Fans Run Over 6000 Rpm And CPU Hit 92c

May 21, 2009

So I know there are a few other discussions regarding this subject but none of them are providing me with the info I'm looking for. I am looking to get a few responses on other MacBook Unibody's (Pros welcome too) temperatures when running intense programs (games, video conversion, etc.).

So here's why I am concerned. When running VisualHub in particular, my fans and temp go up absurdly. According to iStat, my fans are over 6000 rpm and my CPU temp hit 92c the other day. I shut it down bc I was having visions of my MB melting in front of me. I have even gone as far as propping up the back to allow for more air flow but that hasn't made any difference as long as I use pretty much any video conversion apps. Games (like Spore) make it hot, but not like this

I can find links to the previous MacBooks temps (which I had and this was never a problem) but nothing on the Unibody's. So please everyone, do share. Please include what apps you were running or if your MB's ever shut down from overheating.

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OS X :: Snow Leopard (A380) GPU Drivers - Fans Running Constantly?

Jun 18, 2009

I noticed that my GPUs fans (either ATI 3870HD or 4870) in my MP 1,1 are considerably louder nonewithstanding nothing CPU/ GPU taxing is running. Anyone else noticed this? Are the GPU drivers not finished yet or is it due SL keeping them under load for Open CL/ Grand Central?

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