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Lenovo thermal paste quality

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  • Laptops
  • Lenovo
  • Thermal Compound
Last response: in Laptop Tech Support
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November 21, 2013 1:42:56 PM

Hi all

just got a Lenovo Yoga 2 Pro and am loving it. however, I don't really like the fans kicking on randomly, and while undervolting helps a little bit, I'm wondering if I can solve the problem by reapplying thermal paste. does anyone know if Lenovo generally uses quality thermal paste in their laptops, or cheap thermal pads? thanks

More about : lenovo thermal paste quality

a b D Laptop
November 21, 2013 2:48:06 PM

From my experience, there's very little difference in commercial thermal paste quality. While I can't speak directly to the brand Lenovo uses, I would imagine it is of high quality. Besides, the 2% to 4% improvement you MAY see won't solve you problem. It is a design issue. Is there any option in BIOS to just leave the fan run continually?
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November 21, 2013 2:52:25 PM

You won't be able to solve your problem with new thermal paste, it would only give you about a 5 degree change max. Wouldn't recommend it.
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November 21, 2013 3:17:09 PM

@clutchc, There isn't a BIOS option to change the fan profile. to be honest the CPU doesn't run hot at all, the fan just likes to kick on at 40-45C, which is all the time and annoying if I'm in a quiet environment such as my home. I guess I'm asking here because I know manufacturers have cheaped out and used thermal pads in laptops here and there in the past and I'm curious if anyone knew that this is the problem.

@pinnacle, I realize it'll make a 3-5C difference max, but I'm hoping those couple of degrees would keep the fan from turning on while I'm just browsing the web etc. I don't hear it in a louder environment such as at my office, it's really only annoying while I'm at home.
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November 21, 2013 3:29:15 PM

My comment would be that pulling off the CPU heatsink isn't easy in a laptop, often laptops will use a single heatsink for the entire board, which can be very challenging to remove.
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November 21, 2013 5:38:11 PM

P1nnacle said:
My comment would be that pulling off the CPU heatsink isn't easy in a laptop, often laptops will use a single heatsink for the entire board, which can be very challenging to remove.


That's definitely true, and I appreciate the advice. it's also why i'm wondering if there's anyone here who might have more knowledge of the type of thermal compound Lenovo likes to use so I can better judge whether or not it's worth the effort.

Anywho, I managed to get a service manual from the Lenovo website, and it seems that the board actually comes out very cleanly. I'm going to try it carefully and report back, not the first time I do this sort of thing anyway, and I've felt better about these things ever since I lapped down my CPU's heat spreader and got a 4 C drop in load temps :D 
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November 22, 2013 8:43:26 PM

Well there you go, keep us informed.
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November 22, 2013 11:11:38 PM

Back with Success!!!

Must say, boy that was a pain in the butt... I've opened up laptops before, but never an ultrabook... the parts are TINY!!! honestly it was a mistake to open it at home and I should've taken it to work to borrow a microscope or something. that aside, I took my time, was careful with handling the parts, and fortunately managed to not break anything. that side, Lenovo's mobo is actually discrete, and after disconnecting a dozen odd headers from various parts, it's actually possible to take just the motherboard out of the system (4" x 2" tiny thing). needless to say, this makes my work a bit easier.

The paste Lenovo happen to use is at least proper paste. that aside, whoever did it used a bit too much, so after a bit of cleaning I carefully applied a thin layer of arctic silver 5, re-tightened the heat-sink, then took it off to check the foot-print of my application. after adjusting again and applying what I think is the right amount, I put everything back together. then, taking inspiration from random forum posts I've seen, I decided to apply a layer of NON-CONDUCTIVE thermal compound, in this case arctic-silver ceramic, to the back of the die-area, allowing it to make contact with the aluminum-ish chassis. Lenovo did put a piece of plastic there to prevent any shorting, and I left that plastic alone. thus the laptop does not get scorching hot when I use it on my lap. and on the odd chance that I want to game from it or do anything intensive, I can set it down on a desk or hopefully a cooling pad.

As for my ultimate goal, I actually managed to lower the idle temp by 5 C, and load temp by nearly 10 C. while both are good, it's the idle-ish temp that was critical. apparently Lenovo had set the fan to kick on at 48 C, which used to happen randomly in a room of around 20-25 C. after my past reapplication etc, my idle or light usage temps sit around 40-46 C, so the fan almost never kick on while I'm typing up a word document or watching a movie :-)

In the end, while it was well worth it in my case, it's not something I'd advise everyone to do. but if you're patient, careful, and have a nice pair of tweezers with decent grip, this could solve that burning laptop problem you've been having
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Best solution

November 23, 2013 6:39:58 AM

Glad to hear it went well, good to know for future reference.
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November 23, 2013 6:03:23 PM

Well, I sorta answered my own question, but I appreciate you following along :-)

I'm just glad I didn't end up with an expensive electronic mess lol
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