Mac Dual Core Temp - follow up
Discussion
How do
Well, i have downloaded the applications as recommended to me in the previous threads (thanks guys) and had a weird few days. First troubles were coming back to the operation of the Mac OS after another 2 weeks of windows!
got there in the end though! 
Now, the day i tried this the first time, the computer had been plugged in the wall for a fair few days, but only used maybe once or twice. I work away from home and the girlfriend also a complete Mac novice didn't switch the thing on after the weekend. I got back wednesday night but didn't try the apps until thursday afternoon, so at the least it had been plugged in for 4-5 days, possibly the full 9-10 days i was away.
When i did the apps, both coretemp duo and hardware/temp monitor recorded CPU 60'c at idle. throttling the cpu so both cores were working at 100% the temperature never budged. Max after about 15mins of 'work' still at 60'c for the CPU. The SMART monitor noted a slight raise here from around 28'c to 35'c.
This concerned me a bit so i rang the local apple shop where i got the computer from. They agreed it was a bit high, but odd that the temperature didn't move under load and suggested i borugh it in the next day (this was at 525pm).
Duly turned up the next morning to get dicked over by the prick behind the counter claiming they didn't have enough time that day (definitely felt i was being fobbed off!) so returned with computer back home. Now, since that evening and of course whilst travelling to shop etc the computer was unplugged (i decided to unplug it seeing as i wasn't using it the previous evening). When i got back home i re-ran the apps as instructed from complete cold.
this time the temperature on both coretempduo and hardware/temp monitor never flinched past 20'c, although again the SMART monitor noted a slight increase in temp to around the 32'c mark from quite cold. Even with both cores at 100% it never budged.
I have since been turning the computer off at wall when not on, but otherwise leaving it in. I have also run the temp applications pretty much every time i have used it and never seen the temperature go higher than ~20'c.
So i conclude at the moment that i haven't got a problem, although i'd be interested to hear of ideas why it was 60'c before (just that it had been plugged in all that time..? Perhaps it (being plugged in) contributed to just overall warmth of the case and residual chip heat..?
Supposedly the apple shop are to call me next time i am home so i guess there is still an oppurtunity to have the chips checked for grease application etc in due course if you think it might be worth it..?
Cheers guys - this little exercise definitely helped me work my way around the apple hard/software if nothing else!
Well, i have downloaded the applications as recommended to me in the previous threads (thanks guys) and had a weird few days. First troubles were coming back to the operation of the Mac OS after another 2 weeks of windows!
got there in the end though! Now, the day i tried this the first time, the computer had been plugged in the wall for a fair few days, but only used maybe once or twice. I work away from home and the girlfriend also a complete Mac novice didn't switch the thing on after the weekend. I got back wednesday night but didn't try the apps until thursday afternoon, so at the least it had been plugged in for 4-5 days, possibly the full 9-10 days i was away.
When i did the apps, both coretemp duo and hardware/temp monitor recorded CPU 60'c at idle. throttling the cpu so both cores were working at 100% the temperature never budged. Max after about 15mins of 'work' still at 60'c for the CPU. The SMART monitor noted a slight raise here from around 28'c to 35'c.
This concerned me a bit so i rang the local apple shop where i got the computer from. They agreed it was a bit high, but odd that the temperature didn't move under load and suggested i borugh it in the next day (this was at 525pm).
Duly turned up the next morning to get dicked over by the prick behind the counter claiming they didn't have enough time that day (definitely felt i was being fobbed off!) so returned with computer back home. Now, since that evening and of course whilst travelling to shop etc the computer was unplugged (i decided to unplug it seeing as i wasn't using it the previous evening). When i got back home i re-ran the apps as instructed from complete cold.
this time the temperature on both coretempduo and hardware/temp monitor never flinched past 20'c, although again the SMART monitor noted a slight increase in temp to around the 32'c mark from quite cold. Even with both cores at 100% it never budged.
I have since been turning the computer off at wall when not on, but otherwise leaving it in. I have also run the temp applications pretty much every time i have used it and never seen the temperature go higher than ~20'c.
So i conclude at the moment that i haven't got a problem, although i'd be interested to hear of ideas why it was 60'c before (just that it had been plugged in all that time..? Perhaps it (being plugged in) contributed to just overall warmth of the case and residual chip heat..?
Supposedly the apple shop are to call me next time i am home so i guess there is still an oppurtunity to have the chips checked for grease application etc in due course if you think it might be worth it..?
Cheers guys - this little exercise definitely helped me work my way around the apple hard/software if nothing else!
m12_nathan said:
Wasn't there an isue with some chips not correctly reporting the temp?
I've no idea! Thats why i'm writing on here!
sorry! By the way, I'm in Aus so the temp is currently between 5 - 25'c outside, although my flat is probably between 10-20'c i guess (if that makes a difference)
Buffalo said:
Further to this (ok so i am bored at work!)
Important flaw on Core Duo Processors
Some of the users of SpeedIt reported a bug related to the readout of the temperature, we have been tested the digital readout and we discovered that the problem is related to a bug in the microprocessor.
This bug could be affect your MacBook is Speedit temperature readout is below 30ºC, and dont' change. If your temperature vary from 20 up to 80 don't worry you are not affected by this bug.
The bug is documented by Intel and happend only in some processors and is the following:
AE18 Processor Digital Thermal Sensor (DTS) Readout stops updating upon returning from C3/C4 state. (Source Intel Corp.)
If this is your case, we recomend to go to Apple to verify your computer, because in case of thermal problems the processor will never get protected. You can solve this issue too with the last firmware from Apple, Intel propose a solution via bios or efi.
If you need more information contact us.
just wondered if anyone had knowledge of the firmware upgrade..?
ta
Important flaw on Core Duo Processors
Some of the users of SpeedIt reported a bug related to the readout of the temperature, we have been tested the digital readout and we discovered that the problem is related to a bug in the microprocessor.
This bug could be affect your MacBook is Speedit temperature readout is below 30ºC, and dont' change. If your temperature vary from 20 up to 80 don't worry you are not affected by this bug.
The bug is documented by Intel and happend only in some processors and is the following:
AE18 Processor Digital Thermal Sensor (DTS) Readout stops updating upon returning from C3/C4 state. (Source Intel Corp.)
If this is your case, we recomend to go to Apple to verify your computer, because in case of thermal problems the processor will never get protected. You can solve this issue too with the last firmware from Apple, Intel propose a solution via bios or efi.
If you need more information contact us.
just wondered if anyone had knowledge of the firmware upgrade..?
ta
Edited by Buffalo on Thursday 8th June 09:01
Found this, as written by myself!
If you're getting 60-odd degrees at idle, this is normal and expected. Apple let the CPU get warm under low load / idle conditions because they prefer low noise - i.e. the fans don't run at all at low load conditions and this allows the CPU to warm up.
The important factor is how hot the CPU gets under maximum load, if you're staying below 84˚C then your machine is fine.
The important factor is how hot the CPU gets under maximum load, if you're staying below 84˚C then your machine is fine.
cyberface said:
If you're getting 60-odd degrees at idle, this is normal and expected. Apple let the CPU get warm under low load / idle conditions because they prefer low noise - i.e. the fans don't run at all at low load conditions and this allows the CPU to warm up.
The important factor is how hot the CPU gets under maximum load, if you're staying below 84˚C then your machine is fine.
The important factor is how hot the CPU gets under maximum load, if you're staying below 84˚C then your machine is fine.
Yes, but it only registered 60'c once anc since then even with the CPUs working at 100% as per the little speedit thingy they only register 20'c. I will download that updated firmware when i am home next week and see if this changes what temperature is registered using coreduotemp and the hardware/temp monitors.
Cheers...
Buffalo said:
cyberface said:
If you're getting 60-odd degrees at idle, this is normal and expected. Apple let the CPU get warm under low load / idle conditions because they prefer low noise - i.e. the fans don't run at all at low load conditions and this allows the CPU to warm up.
The important factor is how hot the CPU gets under maximum load, if you're staying below 84˚C then your machine is fine.
The important factor is how hot the CPU gets under maximum load, if you're staying below 84˚C then your machine is fine.
Yes, but it only registered 60'c once anc since then even with the CPUs working at 100% as per the little speedit thingy they only register 20'c. I will download that updated firmware when i am home next week and see if this changes what temperature is registered using coreduotemp and the hardware/temp monitors.
Cheers...
Fair enough, if you're getting a constant 20 C under all loads then it sounds like the CPU die temp bug as per InCrew's advisory you posted above. If the firmware update doesn't fix it, then you'd be best off returning it for repair or replacement. The Core Duo Mac laptops do run hot and you do need the cooling system to be working well...
Just to update this long running saga (can only do this when i am back at home as i work away lots)...
I downloaded some of the updates from the apple page and loaded them the other day, re-running the temperature trial to make the CPUs sweat. Seem to be idling now around the 45'c mark and throttling up gives a nice curve to the heat settling between 60-70'c IIRC (have it written down somewhere).
So, i might leave it there for the time being... When i get broadband hooked up at home (next couple of weeks) i'll download the rest of the OS/firmware updates and keep my eye on it.
Thanks for the help anyway!
~PHIL
I downloaded some of the updates from the apple page and loaded them the other day, re-running the temperature trial to make the CPUs sweat. Seem to be idling now around the 45'c mark and throttling up gives a nice curve to the heat settling between 60-70'c IIRC (have it written down somewhere).
So, i might leave it there for the time being... When i get broadband hooked up at home (next couple of weeks) i'll download the rest of the OS/firmware updates and keep my eye on it.
Thanks for the help anyway!
~PHIL
Purely out of interest, why are you guys monitoring the temps??
I have 4 macs in the house (two Powerbooks, an Intel CoreDuo Mini [being used as the centre of a home theatre set up to good effect] and a G5 iMac) and can't say I've ever bothered doing this. The Powerbooks only ever feel hot when on my lap, and all of the machines simply work (typically left on 24x7 with the odd restart here and there just because I think I ought to).
Have you had issues with the machines?
I have 4 macs in the house (two Powerbooks, an Intel CoreDuo Mini [being used as the centre of a home theatre set up to good effect] and a G5 iMac) and can't say I've ever bothered doing this. The Powerbooks only ever feel hot when on my lap, and all of the machines simply work (typically left on 24x7 with the odd restart here and there just because I think I ought to).
Have you had issues with the machines?
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