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Pictures of SR MBP high CPU temp due to poor thermal paste application (56k ok)
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all mac laptops do this. they change their clock frequencies to suit the requirements.
With some undervolting in Windows (can you do the same in OSX?) I get 68C with both cores at 100% load after 10 minutes. And this is on a wood table and with a ~75F room temperature.
Not 95C like some of you, thank god, but still quite a bit higher than the competition, though the 1 inch thickness more than makes up for it. Still the bottom gets uncomfortably warm sometimes, so I'll eventually crack this thing open to look at the thermal paste.
Not 95C like some of you, thank god, but still quite a bit higher than the competition, though the 1 inch thickness more than makes up for it. Still the bottom gets uncomfortably warm sometimes, so I'll eventually crack this thing open to look at the thermal paste.
wow three of the most heat producing chips... the CPU, northbridge and GPU are pretty much side by side. concentrated heat source FTL.
id say thats not a terribly good design.
i like the way dell do it in their XPS1710, by placing the two biggest heat sources, the CPU and GPU basically at opposite ends of the machine with their own HSF so that they cant affect each other heat wise.
i know apple have a space premium to work around though but entrusting heat removal from all 3 major chips to just 2 heat pipes sound like a recipe for a hot lap. i mean if the CPU gets hot when its crunchin video files, then by no fault of its own the GPU and NB are gonna get hot as well...just from radiating heat. and if your playing games well...
i see they epoxied the chips the PCB, good thing too, we dont want whats happening to xbox360s where they get so hot the PCB warps and the BGA mounting points disconnect from the board.
the temperatures arent something to be overly concerned about, i mean GPU's regularly run and can handle 80-90 degrees, so id imagine CPU's can too. but when the chassis of the machine is made from aluminium and inherently acts like a big heatsink, its not desirable...especially on your lap.
i havent tested mine really yet, ive had it on my lap a few times doing stuff in parallels mainly and the CPU goes up to about50 and the gpu 65. it can get uncomfortable at times i must admit.
id say thats not a terribly good design.
i like the way dell do it in their XPS1710, by placing the two biggest heat sources, the CPU and GPU basically at opposite ends of the machine with their own HSF so that they cant affect each other heat wise.
i know apple have a space premium to work around though but entrusting heat removal from all 3 major chips to just 2 heat pipes sound like a recipe for a hot lap. i mean if the CPU gets hot when its crunchin video files, then by no fault of its own the GPU and NB are gonna get hot as well...just from radiating heat. and if your playing games well...
i see they epoxied the chips the PCB, good thing too, we dont want whats happening to xbox360s where they get so hot the PCB warps and the BGA mounting points disconnect from the board.
the temperatures arent something to be overly concerned about, i mean GPU's regularly run and can handle 80-90 degrees, so id imagine CPU's can too. but when the chassis of the machine is made from aluminium and inherently acts like a big heatsink, its not desirable...especially on your lap.
i havent tested mine really yet, ive had it on my lap a few times doing stuff in parallels mainly and the CPU goes up to about50 and the gpu 65. it can get uncomfortable at times i must admit.
Stupid question here... how did ya guys get your CPU maxed? I tried to loop QT trailers off apples site but the most I got was play 4 videos at once before QT crashed (and istat said the cpu was only at 75% at that point..) is there a better way to stress the CPU? like a program prime95 (a windows stress program) for mac?
EDIT: I looked in the heat vent and I can see all thee chips, however I dont see any extra thmeral paste. Its just where the chips are.
EDIT: I looked in the heat vent and I can see all thee chips, however I dont see any extra thmeral paste. Its just where the chips are.
just run seti@home (boinc) or something for a night or 2 lol. thatl fix him right up!
In terminal:
To max out userspace CPU time
yes > /dev/null
To max out kernel CPU time
cat /dev/zero > /dev/null
If you run the appropriate commnad twice it will load both cores....once will do a single core.
To max out userspace CPU time
yes > /dev/null
To max out kernel CPU time
cat /dev/zero > /dev/null
If you run the appropriate commnad twice it will load both cores....once will do a single core.
thanks eenu.
OK I guess I got a good thermal paste job, maxed out at now for a few min and it went up to almost 80C then the fans kicked in full blast and now im holding steady between 69-71C still going at 100% BTW my nermal web serfing/idle temps are around 40-55C depending on what im doing. I took a brighter flashlight to my back port and I dont see any excessive paste at all. and im doing this with the MBP laying on my bed next to me
not the best place I know but more realistic. Also like to add that iv noticed when im running of battary power the temps drop down in the mid-high 30C range.
OK I guess I got a good thermal paste job, maxed out at now for a few min and it went up to almost 80C then the fans kicked in full blast and now im holding steady between 69-71C still going at 100% BTW my nermal web serfing/idle temps are around 40-55C depending on what im doing. I took a brighter flashlight to my back port and I dont see any excessive paste at all. and im doing this with the MBP laying on my bed next to me
not the best place I know but more realistic. Also like to add that iv noticed when im running of battary power the temps drop down in the mid-high 30C range.is everyone just using istat pro to find out that cpu temp/fan speed?
without any mods, my 17" SR (hi-res) is 44 degrees for "CPU A" and 54 degrees for "GPU Diode" and both fans are at 2000rpm
only mail and safari is open.
should i consider myself lucky, or would it be worth it to get the thermal paste redone? (ie - what should i expect for a laptop at idle?)
without any mods, my 17" SR (hi-res) is 44 degrees for "CPU A" and 54 degrees for "GPU Diode" and both fans are at 2000rpm
only mail and safari is open.
should i consider myself lucky, or would it be worth it to get the thermal paste redone? (ie - what should i expect for a laptop at idle?)
My full load temp is above 90°C for about 5sec, and then constant at about 80°C. Need to worry?
I mean, since we do not have any apple store in germany, fixing/replacing it would probably mean, sending the MBP away for a couple of weeks.
Something I do not look forward to.
I mean, since we do not have any apple store in germany, fixing/replacing it would probably mean, sending the MBP away for a couple of weeks.
Something I do not look forward to.
Eenu,
I've been following this thread quite a bit, and being a SR MBP owner i must agree with what you are saying.. these items are now designed with quite a bit of threshold, not to mention design delta/T limits well above any normal running conditions.. and wherever it exceeds, there's always safety cutoff measures.
From personal experience with my SRMBP i've found that temps were going well past 90c when on full load encoding or rendering images.. however a simple fix.. get a laptop stand with active fans! Seriously, my temps at load are down and using the notebook feels more anatomically correct. Not to mention running lower running temps (around 75-80 on load). They're cheap (round $20AUD here) and they also place the keyboard in a better position for typing.
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Or you could tell that person how to properly load test their machine (looping multiple hi-res videos, running Prime95, etc).
Throughout this thread, we see many examples of people whose MBP runs near 70-80C under full load, and others' MBPs which run at 90+ degrees C under full load. We also have pictures of poor thermal paste jobs, and stories of how redoing the paste job caused temps to drop 10-15C. You can also spend extra $$$ on a nice little stand with LED-lit external fans to get the same effect, of course.
Put 2+2 together. eenu says they equal 5. I say they equal 4. If you're hitting 90C or higher, your MBP's paste job was a sloppy one. The MBP is not operating as Apple engineers had intended and Apple should fix it. You paid over $2000 for a laptop: demand proper assembly.
Thats a nice stand! What make is it? I'm looking for one like that for my desk and another for my knees (without fans
) for when i am in bed.Nope thats absolutely fine. Don't worry about it.
...and does nothing for the GPU right next to it. Looping multiple hi-res videos is a better test as far as heat is concerned.
My recommendations to all experiencing temps above 70C:
Thermal paste requires a certain amount of time of usage before optimal performance. My MBP was hitting 78C on full load when i got it. It now hits 68C.
It used to idle at 60C and now it idles at 50C.
Facts:
The CPU will function normally under 100C without any damage. Only extremely long periods of time (thousands of hours) under a temp close to 100C may diminish your processors life span. Your CPU will not fail unless it runs at temps higher then 125C. Apple does throttle the CPU depending on the ambient temperatures inside the laptop.
Suggestion:
If the laptop is too hot to work with because you absolutely need it on your laps or for whatever reason, it is your right to bring it in simply because it is not performing its intended task properly even if its within specification.
Thermal paste requires a certain amount of time of usage before optimal performance. My MBP was hitting 78C on full load when i got it. It now hits 68C.
It used to idle at 60C and now it idles at 50C.
Facts:
The CPU will function normally under 100C without any damage. Only extremely long periods of time (thousands of hours) under a temp close to 100C may diminish your processors life span. Your CPU will not fail unless it runs at temps higher then 125C. Apple does throttle the CPU depending on the ambient temperatures inside the laptop.
Suggestion:
If the laptop is too hot to work with because you absolutely need it on your laps or for whatever reason, it is your right to bring it in simply because it is not performing its intended task properly even if its within specification.
Be careful there as Apple will tell you to sod off if you say your using it on your knees
chem...
this is getting crazy! This is all about personal comfort with your machine. If hitting 90c periodically is too warm for your liking, then take it in and have someone look at it. When they tell you, nothing wrong, there designed to handle the heat, then what do you do....say they're lying and this is a massive conspiracy?!? LET IT GO!!! You've given your opinion, with overwhelming conviction, some will agree some will not.
this is getting crazy! This is all about personal comfort with your machine. If hitting 90c periodically is too warm for your liking, then take it in and have someone look at it. When they tell you, nothing wrong, there designed to handle the heat, then what do you do....say they're lying and this is a massive conspiracy?!? LET IT GO!!! You've given your opinion, with overwhelming conviction, some will agree some will not.
Sorry but please provide documentation from Apple specifying what they intended. Otherwise this is just your subjective opinion.
Basically, if its under 100C, its fine. Just dont use it on your lap
My MacBook runs at around 70C, and thats fine.
What someone needs to explain to me: Thermal paste doesn't cool the processor down, it just lets it move heat to other parts of the computer more easily. While I can understand that poor thermal paste = hot processor = bad, how would this affect the outside temperature?
I ask them to open it up and look at the thermal paste job. If it looks like it was applied by a zoo monkey on ritalin, I ask for it to be fixed. I then enjoy the MBP running at the temperature I paid for. If it looks like it was applied as per instructions you would see on a third party thermal paste vendor's website, I shrug my shoulders and say "thanks for your time."
It's about standards, I guess. If I spend $2000+ on something (which comes with a warranty!), I expect proper assembly. Others may expect "good enough." It just irks me that some people believe Apple should be able to get away with this. To each their own.
Errr because your CPU/GPU is in a 1" thin enclosure therefore heat is bound to be transmitted to the casing and hence why its hot on your knees
Chem said:
@CHEM, what temperature did you pay for? Sorry is it in the apple specs page for the mahines on the apple site? Sorry i was not aware laptops came with temp specs like hardware components:
2.4Ghz C2D
8600MGT
No higher than 70C at 100% load
160GB HDD
.........
But wouldn't better thermal paste move the temperature to the outside even better, meaning it gets hot outside but not so hot inside?
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