CPU temp and paranoia.

Hi all,
During CPU intensive processes (rendering etc.) the iStat menu reports the CPU temp of up to 81C, which is quite hot, I think. At the same time the fans speed up to about 2200rpm and don't go any faster.
Now, should I assume that the system knows what it's doing and leave it as is, or be paranoid and get the fan control and speed the fans up?
I am not sure what to think / do about it.
TIA

Here's the link to Fan Control. I run it on my MBP even though it's not currently doing heavy-duty apps.
http://www.versiontracker.com/dyn/moreinfo/macosx/31029
One nice feature is a quick access setting (via a menubar icon) to a "high-performance" setting that runs the fans up to their max of 6000. Handy if you see the temp climbing unexpectedly.

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MOVED: question regarding CPU temps and latest bios (1.8)

This topic has been moved to AMD64 nVidia Based board.
question regarding CPU temps and latest bios (1.8)

I'd believe the first bios's temps more than the second...
However what temps are given when using speed fan and/or everest? (in windows)

CPU Temp and Fan Speed

Hi
According to SMC Fan Control and iStat my CPU is running at 74C currently and often 90C under light load with associated fan speed of 6200 rpm. I have checked activity monitor and very little load on CPU jsut safari and Activity Monitor have any significant usage ( 10% ish). Is this a 'normal' CPU temp and if not are there any ways to check cooling or in crease cooling, ultimately to keep the fan low and noise down,battery life up??
many thanks

thanks for the response.
'All processes' is selected - showing 50-70% CPU idle. MacBook has good ventilation, sitting on a hard table. I upgraded the HD a while ago, to a 7200 rpm 320GB unit, would this make a difference?

Is there a free app that allows me to show cpu temp and fan speed in menu bar?

i want a free app that monitors cpu temp and fan speed and can display them in the menu bar of my MBA

http://www.apple.com/downloads/dashboard/status/istatpro.html

T510 datasheet CPU temp and temperature in general

Hi all
I have a T510 4313CTO and I love it.
I sometimes run programs that are very CPU intensive i.e Max's the CPU and sure enough the fan kicks in to keep it cool. However I notice that the CPU Temp reached 80 degrees, when it had been running at 100% CPU for 30 mins or so.
I am looking for a datasheet or similar regarding the temperature of the CPU and other parts (if they have temperature sensors)
I don't have any problem - just looking for data
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J
Solved!
Go to Solution.

given that you have the i7 dual core and the nvidia GPU then the temperature you experienced is quite normal for a cpu running 100% load for 30 minutes.
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Question regarding CPU temps and latest bios (1.8)

Hi, just build my first system using an MSI board. The K8N Neo2 Platinum with an A64 3500+ Venice. It came with bios version 1.5 and everything went smooth. Been running stable for a few days now. Cpu temps were anywhere from 38 (idle) to 50-54 under load. Though most of the time they were in the mid 40's. Which are acceptable temps.
Anyway, I just installed the latest bios tonight (1.8) and the reported temps have drooped significantly. Around 27c (idle), which is actually lower than the reported system temp (28c). One of the listed fixes for Bios 1.8 are cpu temps, but can these be correct? They seem very low. Which temps should I believe?
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I'd believe the first bios's temps more than the second...
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So I have a MBP intle core i5 2.5GHz with 4 GB of ram, I thinkits either a 2008 model or 2010, I bought it new in 2010.
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LampmanBrad wrote:
one question I have is, will tthere be less strain on the cpu if I drop the resolution of my new monitor? I dont want to drop it past 1600x1000 (not sure of the exact dimensions) because then it is defeating the purpose of why I bought a new larger screen with a high res.
Of course. A smaller resolution will require less performance to your dedicated graphic card. Note that your Mac has got two graphic cards (an Intel card and a NVIDIA GeForce one), and your computer switches to the dedicated graphic when it requires more graphic performance.
LampmanBrad wrote:
my next question is, with fancontrol, how high can i force the fans to run and for how long while doing these kind of tasks on dual monitors? Can I set the left side fan to run at 5-6k as a default when playing a session of online poker (this is my part time job so its an important question) while leaving the right fan at 2k? or would it be better to keep them balanced? how long can they run at high rpm before it could cause problems? how long can my mbp run at constant temps of 80-95 degrees before it is dangerous for it? like I said it is mostly common for it to be between 75-85 at most times.
We don't recommend smcFanControl because your Mac knows what's the correct fan speed and because this application modifies the SMC.
It's not good that your fans run at maximum speed for a long time (5000 rpm is too high). Now, the best you can do is to reset the SMC > http://support.apple.com/kb/HT3964 If you have problems with the fan speed, this should solve the problem.
LampmanBrad wrote:
and last but not least, could this be a defect that it runs at such high temps? could it be my fans that are just plugged up and need a cleaning or replacing?
If the SMC reset doesn't work, I suspect two things: the first, that you have a hardware problem, and the second, that there's a process eating CPU and memory when you are using the computer, because those temperatures are not normal. Also, at that fan speed, they may fail

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Hello!
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I'm curious, does the usage of USB and FireWire ports increase CPU temperature and fan speed...?
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thanks for the response.
'All processes' is selected - showing 50-70% CPU idle. MacBook has good ventilation, sitting on a hard table. I upgraded the HD a while ago, to a 7200 rpm 320GB unit, would this make a difference?

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CPU temp and paranoia.

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