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FragTek said:
After stripping my 17" apart and reapplying with AS5 my temps didnt drastically drop as much as the original posters did but it's better none the less. It currently idles at about 65*c and tops out at about 82*c under full load.

Better than before!
Hmm. My MBP17 idles ~50*c and tops out at 82*c after hours of full bore heat soaking.

Actually levels out at 80*c and stays there with the fans on if load persists.
 
remowilliams said:
Hmm. My MBP17 idles ~50*c and tops out at 82*c after hours of full bore heat soaking.

Actually levels out at 80*c and stays there with the fans on if load persists.

Yeah my revised temps are high 40 idle and high 70 load.
 
i would just to add my view.

i have a mbp and was worried by the temp.

I have reapplied my thermal paste with as5 twice now, and wouldnt advise anyone to do it!!!

i think there is possibly a problem with missaligned heatsink or faulty heatpipes.

after both reapplications, yes my core duo temps have dropped by a couple of degrees, but my case is still roasting, if not hotter than it was before!!!

idle 50ish, full load will send it to 80(fans kick in) (coreduo temp)

and i do know what i am doing, have applied thermal paste many many times without problem..

and since a majority of the heat is below the heatpipes on the bottom of the case, that would make me think that the heat is indeed being transfered from heatpipe to case rather than along it... what gives....

fed up now...
 
colonel said:
i would just to add my view.

i have a mbp and was worried by the temp.

I have reapplied my thermal paste with as5 twice now, and wouldnt advise anyone to do it!!!

i think there is possibly a problem with missaligned heatsink or faulty heatpipes.

after both reapplications, yes my core duo temps have dropped by a couple of degrees, but my case is still roasting, if not hotter than it was before!!!

idle 50ish, full load will send it to 80(fans kick in) (coreduo temp)

and i do know what i am doing, have applied thermal paste many many times without problem..

and since a majority of the heat is below the heatpipes on the bottom of the case, that would make me think that the heat is indeed being transfered from heatpipe to case rather than along it... what gives....

fed up now...

That's how the machine is designed...to use the metal case as a heatsink. The alternative would be to make the machine thicker and heavier, or have the fans running non-stop (which would kill battery life).
 
thanks for your reply, i do accept what you say, but am a little dismayed that some mbp owners have reported a much cooler case after reapplication of thermal paste. mine seems hotter....
 
colonel said:
thanks for your reply, i do accept what you say, but am a little dismayed that some mbp owners have reported a much cooler case after reapplication of thermal paste. mine seems hotter....

Well, most reports, they didn't take before and after temp readings...I attribute most to the placebo effect.
 
mmmcheese said:
Well, most reports, they didn't take before and after temp readings...I attribute most to the placebo effect.

Uhmm... most of the people reporting good temperatures AFTER the reapplication DID take before and after readings.

It was the one article that tried to debunk the "thermal grease myth" that failed to get the before temp.

There are many of us that have greatly improved temperatures from the reapplication. I can't really say why colonel didn't see an improvement, but I'm sitting here happily with my MBP on my stomach in bed typing away with CoreDuoTemp reading 47C after the reapplication. Before the reapplication it was extremely uncomfortable on my legs (much less my stomach) at around 65C while browsing the web.
 
FragTek said:
Yeah my revised temps are high 40 idle and high 70 load.

Really? I just got done cleaning off the sucker with arcticlean and applying ceramique. There was definitely some sort of thermal pad on there, the paste had that bumpy texture that all thermal pads do. Anyway when I started it up I was idling below 40 and it actually hit 29 for a second. I then ramped it up with Boinc utilizing both cores and my temps actually rose higher!!! Before I had around 80-82 and now its around 82-86, except the only difference is that the fans, while still loud, aren't at full tilt like they were before. I brought it back down and it idled at 58 for while and its now down to 54 at idle with about 1-8% CPU utilization. Supposedly ceramique takes 100 hours or more of "burn-in" time to become its most effective, so hopefully I'll lose another degree or two by then.

I am going to keep playing with it, but has anyone else who reapplied experienced the higher temp issue? I was very very careful to replace everything exactly the way it was. In addition although its reading out slightly higher temps at load the case isn't burning hot like it was before.

EDIT: Oops forgot to mention I have a black Macbook.
 
brbubba said:
I am going to keep playing with it, but has anyone else who reapplied experienced the higher temp issue? I was very very careful to replace everything exactly the way it was. In addition although its reading out slightly higher temps at load the case isn't burning hot like it was before.

EDIT: Oops forgot to mention I have a black Macbook.

Hopefully when you say you replaced everything the way it was you don't mean the thermal paste... since in most cases we've seen, there is WAY too much on there.

If the case is cooler, I guess you've won. That's the real problem anyway. Since the processor can take 100+C the only problem is the burning sensation ;)
 
Ive been noticing my temps get better as the AS5 sets up... My book idles in the mid 40's now and never hits 80. I'm definately content with those temperatures!
 
Definetly. AS5 has a set in period. The temps will get better and better as the AS5 sets. I know people who keep reapplying over and over again because the temps don't get better.

Another note, in case it hasnt been touched on. Once you put that heatsink back on DO NOT LIFT IT UP! You just screwed up the natural fill it will make. G' Day :)

FragTek said:
Ive been noticing my temps get better as the AS5 sets up... My book idles in the mid 40's now and never hits 80. I'm definately content with those temperatures!
 
kevin.rivers said:
Definetly. AS5 has a set in period. The temps will get better and better as the AS5 sets. I know people who keep reapplying over and over again because the temps don't get better.

Another note, in case it hasnt been touched on. Once you put that heatsink back on DO NOT LIFT IT UP! You just screwed up the natural fill it will make. G' Day :)
Yeah by ripping the heatsink off of the chips after a fresh application you now have a bunch of nice little air pockets in the TIC which screws the contact all to hell.

If for some reason you have to take it back apart, just clean it all up and reapply once again or else you just wasted your time ripping apart your lappy.
 
FragTek said:
Ive been noticing my temps get better as the AS5 sets up... My book idles in the mid 40's now and never hits 80. I'm definately content with those temperatures!

Really? I know AS5 is slightly better than ceramique, but not 10 degrees better. Just curious, how fast are your fans running at full load? I'm thinking the thermal sensors are designed to keep it in that 80-85 sweet spot and will slow down the fans accordingly.

Also kind of curious, if CoreDuoTemp says the min is 1000mhz, how come mine never gets down that low? The lowest it ever goes is 1500mhz. I would think surfing the web wouldn't require much power at all so why isn't it down at 1k mhz? I did see it dip to 1333 once, but that must have been some fluke.
 
hey guys, here is what i have noticed w/My 2 month old MBP(W8611)

Idle temps>>
Power from Battery > 60-65C
Power from AC adapter > 70-75C :eek:

Load temps >>

Power from battery/adapter > 75-85C :eek:

anyways, I'm thinking about opening the MBP this weekend and re-apply the thermal goo/arctic silver 5 and see if it makes any diff. My question is.. how many others have tried this so far? Can we make a poll and ask everybody to submit their results before and after the application of thermal paste?

what kinda screw drivers do i need to open up my MBP?

thanks.
 
ntrsfrml said:
hey guys, here is what i have noticed w/My 2 month old MBP(W8611)

Idle temps>>
Power from Battery > 60-65C
Power from AC adapter > 70-75C :eek:

Load temps >>

Power from battery/adapter > 75-85C :eek:

anyways, I'm thinking about opening the MBP this weekend and re-apply the thermal goo/arctic silver 5 and see if it makes any diff. My question is.. how many others have tried this so far? Can we make a poll and ask everybody to submit their results before and after the application of thermal paste?

what kinda screw drivers do i need to open up my MBP?

thanks.

#0 Phillips Head and a T6 Torx... and a lot of guts :)

However, with those temps, it's going to be well worth it I think ;) Mine weren't nearly that high (idle around 60-65C) and they dropped down to 45C idle.
 
Can we rename the titile of this thread to wow like 5 people who did this got good results the rest of us just ruined our applecare
 
bbrosemer said:
Can we rename the titile of this thread to wow like 5 people who did this got good results the rest of us just ruined our applecare

Honestly, I highly doubt anyone's ruined their warranty. If your screen goes bad on your laptop, or your battery dies... Apple isn't going to open up your laptop and check to see if the thermal paste has been reapplied.

More than five people have gotten great results. Apparently some people either:

A.) Have no idea how to apply thermal paste, so they fixed nothing.
B.) Have other problems in their laptop that cause the heat.
 
I think the true heat problem is the fact that the processor is encased in something that is 3/4 of an inch thick.
 
bbrosemer said:
I think the true heat problem is the fact that the processor is encased in something that is 3/4 of an inch thick.

Then our thermal paste reapplications must be magic! :p
 
bbrosemer said:
BTW everyone Core Duo only running at 77C with 2 instances of yes>/dev/null running

I assume this is a MBP, no? I cannot get my temps down below 80 on my MB. I actually just reapplied the ceramique using the older method of application, thin layer as opposed to the grain that AS website now uses. My temps are down by another degree or two but still at 82-85 and 52. Not going to complain though as my Macbook hasn't once mooed since putting on the thermal paste two days ago.
 
I am about to reapply the thermal paste on my MBP...

I went to Radio Shack... they only had generic thermal paste and the employee told me to go to Fry's, actually. I went there. They had "Artic Silver Thermal Adhesive" which I was skeptical of, but two employees assured me would work. Of course, when I come back and check Artic's website they say absolutely not. I also picked up "Artic Alumina Ceramic Polysnthetic Thermal Compound" for 3.99 just in case. Will this work about as well or should I go out on a third outing? If we are talking a degree or two, I can probably deal with that.

Second, I don't have a spludger, which ifixit recommends. Is this going to be a big deal? Another thing I couldn't find.

Third and finally, do I really need to remove the temperature sensor and pram battery from the logic board as it suggests in the final step of complete dissambly on page 14 of the ifixit guide? If so, how do I do so?

http://www.ifixit.com/Guide/85.1.14.html

Thanks in advance for any help!
 
Firstly, Arctic Alumina is probably better than Apple's stock thermal paste, but not as good as Arctic Ceramique, which is not as good as Arctic Silver 5. Saying that, it is stll pretty good. (btw, why don't you order online?, easy to get AS5 that way)

Secondly, DO NOT USE Arctic Silver Thermal Adhesive. it is a permenant Epoxy and will be very difficult to remove, once you attach your heatsink basically it aint ever coming off again.

Thirdly, I did not use nor need a spludger, i suppose you would need one if you have "fat" hands, but personally i could reach in and unplug the Keypad connector ribbon easily.

Also, you don't need to do a full dissassembly (and i suggest you don't). Once as far as getting the case open (keypad off) you just unscrew the heatsink and fan shroud and your in, no need to remove the ptical drive or anything. The thermal sensors are connected to the heatsink and you have to disconnect them (2 connections)
 
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