High temperature after replacing the CPU T2500 -> T7200 in T60 [ Edited ]

[goldengate]

After replacing the CPU from T2500 to T7200 CPU temperature ranges from 70-85C. It seems to me high, I think about replacing thermal grease or thermal paste application. What's better? Do away with the original gray ribbon and attach a new heatsink or better smear toothpaste?

[TuuS]

If you didn't clean and apply new thermal paste when you installed the cpu, then you'll get severe overheating and may even destroy your systemboard and/or cpu.

Toothpaste???   are you joking?   I hope so, but this is a public forum and we don't want someone to take this serious and ruin their computer, which it would do.

Get some Artic Silver #5 thermal paste. Clean the surfaces with pure alcohol, strongest percentage you can get. do NOT use alcohol that has oils or scents added.

Apply paste about the size of a grain of rice and spread it over the chip surface. To much and it will overheat, you only want enough to fill in the gaps when the heatsink is firmly installed.

[orion9727]

there was a test done and toothpaste came out close to most themal paste.
artic 5 should never be used in a laptop.
it silver and thats a no no on mobile cpu.
use a non conductive one or a thermal pad.

the gray ribbon is a themal pad best to use WHAT CAME IN IT.
reason is that can be a shim and do away with that and no contact.

you went from a 31 watt to a 34 watt TDP not alot but it gonna run hot.
75-80 c is hot yea but you have 65nm cpu class thats gonna run hot because it old and getting a lot of work.
so you all know toothpaste might been used in tests but i not use because it can dry out and you dont know whats in in exacly.
thermal wise i do belive whats in toothpaste is very good thermal wise but stick with the gray ribbon.

[ajkula66 Guru]

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orion9727 wrote:
there was a test done and toothpaste came out close to most themal paste.
artic 5 should never be used in a laptop.
it silver and thats a no no on mobile cpu.
use a non conductive one or a thermal pad.

the gray ribbon is a themal pad best to use WHAT CAME IN IT.
reason is that can be a shim and do away with that and no contact.

you went from a 31 watt to a 34 watt TDP not alot but it gonna run hot.
75-80 c is hot yea but you have 65nm cpu class thats gonna run hot because it old and getting a lot of work.
so you all know toothpaste might been used in tests but i not use because it can dry out and you dont know whats in in exacly.
thermal wise i do belive whats in toothpaste is very good thermal wise but stick with the gray ribbon.

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Please disregard the above post(er).

I've used AS5 on thousands of ThinkPads with no ill effects, actually the exact opposite. Minimal research of experiences posted by other owners on Bill Morrow's ThinkPad Forum will confirm this statement as well. Arctic Silver is as good as it gets unless one wants to spend $50 for a tube of thermal paste.

To OP, your machine is running way too hot for the CPU in question. My 15" T60p with T7600 idles under 50 degrees C, and doesn't go over 62 in normal use. And yes, it has AS5 in it.

[PoPSiCLe]

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orion9727 wrote:
there was a test done and toothpaste came out close to most themal paste.
artic 5 should never be used in a laptop.
it silver and thats a no no on mobile cpu.
use a non conductive one or a thermal pad.

the gray ribbon is a themal pad best to use WHAT CAME IN IT.
reason is that can be a shim and do away with that and no contact.

you went from a 31 watt to a 34 watt TDP not alot but it gonna run hot.
75-80 c is hot yea but you have 65nm cpu class thats gonna run hot because it old and getting a lot of work.
so you all know toothpaste might been used in tests but i not use because it can dry out and you dont know whats in in exacly.
thermal wise i do belive whats in toothpaste is very good thermal wise but stick with the gray ribbon.

---

Uhm, what? Would you mind not talking about stuff you clearly lack even the slightest understanding of? Why, if I may ask, should Arctic silver (or any equivalent) be bad for laptop CPUs? The thermal pads (they grey goo) is generally known to transfer less heat (they block more than conduct) and the only reason they're generally used in laptops is that the gap between the cpu and the heatsink is bigger than on a desktop computer.

Take note that when applying Arctic thermal paste, you might want to add a copper shim or similar, simply to negate the gap that might be there.

The temp you're experiencing (if under load), isn't too extreme. If it's the idle temp, then I'd suggest opening it up again, and redo the thermal connector, whatever it might be.

Avoid toohtpaste. There's been a lot of "tests" using common household items - they all have one or more major drawbacks, the toothpaste one being that when it gets hot, it hardens, and starts cracking up. Unless you have a very even surface (most likely you will not), the chance of it working well over time is slim to none.

[TuuS]

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there was a test done and toothpaste came out close to most themal paste.
artic 5 should never be used in a laptop.
it silver and thats a no no on mobile cpu.
use a non conductive one or a thermal pad.

the gray ribbon is a themal pad best to use WHAT CAME IN IT.
reason is that can be a shim and do away with that and no contact.

you went from a 31 watt to a 34 watt TDP not alot but it gonna run hot.
75-80 c is hot yea but you have 65nm cpu class thats gonna run hot because it old and getting a lot of work.
so you all know toothpaste might been used in tests but i not use because it can dry out and you dont know whats in in exacly.
thermal wise i do belive whats in toothpaste is very good thermal wise but stick with the gray ribbon.

---

Please disregard what this member says, his knowledge of the subject appears to be on par with his knowledge of English spelling and grammar.

You can't do better then Artic Silver #5, it will run several degrees cooler when applied properly. Anyone concerned with conductivity should actually go to Artic Silver website and read their FAQs. 

I'd gladly counter all the "facts" this member claims with real facts and evidence, but his post is mostly nonsensical, which makes it hard to even discuss.Talk of toothpaste and ribbons don't belong in a computer repair topic, next thing we'll talk about cooking your memory modules for supper....     oh yeah, we had that discussion already...    but I think I'd prefer to eat toothpaste, which by the way, does anyone happen to know if toothpaste conducts electricity?    no, you don't know, you can't know, because it's made by countless companies and contains countless different ingredients, many surely do have conductive properties which is a good thing if your talking about conducting heat, not electricity. You also don't know what happens when it gets hot...   I can assure you some toothpaste would migrate all over the inside of your laptop and destroy it, or you may get lucky and find a formula of toothpaste that actually works, for a week or two, before it dries into powder and migrates throughout your system.

Christmas is coming, use Ribbons to tie up your presents, not in your thinkpad. The silicon thermal pads that are used on the boards chipset are NEVER used on a CPU, and doing so would be dangerous. If this member has ever removed a CPU, he would know this, and know Lenovo ONLY uses Thermal Paste, and the last board Lenovo replaced for me came back with Artic Silver #5 on the CPU and GPU

[goldengate]

I undressed everything.
Termopad that is such a tape to the touch reminiscent of plasticine I'm only on the heatsink in place where contact with the graphics chipset and motherboard bridge. while in the place of contact with the processor heatsink does not have the tape and there was never.
So put on a new paste Zalman ZM-STG2 and max CPU temperature is 70C. between 68-70. That is decreased by about 10 degrees.

Generally, most heats up the CPU, VGA and chipset layout are cool. Tube heat sink from the CPU heats up quickly.

I do not know or is it better to give a paste 3M double-sided and best left as it is with the ZM-STG2??

[TuuS]

The Zalman ZM-STG2 paste should work fine. Most of us prefer "Artic silver 5", but either should work well. 

Your results show you've solved the problem, so all is well.

[goldengate]

What do you think about COOLLABORATORY products:

I am thinking if I use LIQUID METAL PAD CPU or LIQUID PRO will help better than ZALMAN ??

[TuuS]

I've found that thinkpad cooling systems are among the best in the industry. I'm not against anyone trying to improve on them, but I do question if it's necessary. 

If you do try it, please let us know what results you find.