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Chuwi Lapbook 14.1 Copper Heatsink Mod – Fix High Temperatures

Chuwi lapbook heatsink mod

The Chuwi Lapbook 14.1 just might be on of the best budget laptops I’ve reviewed on the site and YouTube channel, it has 4GB of RAM, 64GB eMMC, a decent keyboard and trackpad, great screen and a good build quality. Even the option to add an SSD if you wanted to speed it up and increase storage, but it has one big flaw when it comes to gaming.

Gaming on the Chuwi Lapbook 14.1, eventually saw temperatures reach over 95 degrees C on the CPU and iGPU, far too hot for my likely, part of the blame lies with the fact Chuwi used some type of thermal insulator pad onto of the metal heating and shielding, ensuring the Lapbook 14 stays cool on your lap, but trapping all that heat inside the machine.

My copper heatsink mod is rather simple and most of you should be able to perform this without too much difficulty. And the results are nothing short of amazing, lowering maximum temperatures on the Celeron N3450 by over 25 degrees C!

While under normal use temps aren’t an issue, it’s only when gaming it will get really hot and even at 95 degrees there is no thermal throttling however, this will lower temps and increase gaming FPS as it will allow the GPU to clock up higher.

You’ll need the following:

  • One 20mm x 20mm x 1mm copper shim or
  • One x 15 x 15 x 1mm copper plate if your worried about how close the copper is to surrounding resistors and components (I’ve had no issues with my 20mm copper shim)
  • One 2mm thermal pad 50 x 50 or larger if you want
  • Thermal adhesive (Or thermal glue it’s often called)
  • Thermal paste, I used Artic MX4 but anything similar will be fine. Don’t use expensive stuff this is a 6W chipset, not an i7 7700K
  • Optional Sata3 spec M.2 2242 SSD if you want to add an SSD, you might as well do this at the same time.

As per my video guide, the process is as follows:

  1. Remove the 8 screws on the bottom of the Lapbook 14.1, remove the plastic bottom plate.
  2. Remove the battery plug, let’s play it safe and reduce the chances of shorting something out
  3. Earth yourself, use anti-static gear if possible. Don’t touch your long-haired cat or dog just before doing this etc!!
  4. Remove the heatsink / Electromagnetic shielding over the RAM, eMMC and Celeron N3450
  5. Remove the stock thermal pad on the CPU die. Leave the other thermal pads (The blue ones)
  6. Clean the CPU with alcohol. I used Artic cleaner.
  7. Add a small dot of thermal paste (Yes I went overboard in the video, but it wasn’t an issue)
  8. Carefully place the 15mm or 20mm thermal pad on top. Be sure it doesn’t touch any resistors near the CPU die.
  9. Remove that black pad on top of the silver metal heatsink/shielding. This is what is stopping heat being transferred over to the bottom of the case of the laptop.
  10. Place some thermal paste on top of the copper shim (Again I used too much, but no harm was done. Just rather have more than not enough on my own Lapbook
  11. Place the metal factory heatsink back on and press down to ensure the paste spreads out nicely.
  12. Place your 2mm thermal pad on top of the metal heatsink, make sure you removed that thermal insulator/firewall pad.
  13. Plug the battery back in!
  14. Replace the rear plastic cover and 8 screws
  15. Boot up your Labook and enjoy up to 25 degrees less max CPU temps and improved GPU performance!

So far in my use and gaming over 2 hours it only gets slightly warm on the rear, about 35 degrees. Well worth it and I really wish Chuwi had used a thermal pad on the heatsink to transfer heat over to the foil they adding to the inside of rear plate.

With this mod complete you now have of the best 14.1″ notebooks for the price.

This mod should work on other N4200 and N3450 tablets and laptops, mostly ones with plastic housings.

 

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17 Comments

  1. Can you give more specifics about the thermal pad you used and where you bought the thermal pad? What is the thickness of the thermal pad? Shouldn’t you put a thin thermal pad that is also an electric insulator in between the motherboard and the copper shim to be sure there can never be a short? I mean, take a thermal pad, cut a small square the size of the cpu, to allow the copper shim full contact with the cpu, but also allowing electrical insulation of the copper shim from the motherboard components.

    • Nevermind, returned the laptop to Amazon as the temps were out of control and routinely hitting max causing shut down. I was worried the high temps shortening the lifespan of the lapbook and sure enough the lapbook stopped working. what a hunk a junk.

      • The new revised model now has a copper decent heatsink, something that should have been there in the first place (like the Surbook)

        • I ordered and recieved the new model with the heatsink but no m.2 slot but was cheaper at 217 flash sale on gearbest. Lapbook is much better as the touchpad now works properly and there is no need to reinstall windows 10. The heat levels are way better around 65 to 70 C during normal use and never even reaching 90C. Will post a log of temps soon to show the temps over a couple days.

          Only downside is no m.2 slot but I can live with that as the eMMC is by Samsung and reads at 240MB/sec which is fast enough for me. Besides, I bet I could hardly tell between the eMMC and even a 500MB/sec Samsung 960 EVO.

          Had an issue with activation but found someone suggesting the date/time may be the problem but my date, time and time zone were correct. So I tried to manually change all 3 and then reset all back to auto and then windows 10 activated.

          • Seems like the screen is better too as the colors are more vibrant, especially reds are better. The old version the reds looked sorta orangish.

  2. I too have done this Themal Mod. Thank you for the video. Works great. Now from 95 decrees (cpu benchmark) to 65 decrees!
    But i noticed in hwinfo that the cpu still got lowerd in mhz to 1600 mhz instead of 2100-2200…
    Why is that?
    I turned DPTF off in the bios, selected performance power management in Windows 10, turned down battery saving in intel management for gpu(?) still i get that lower mhz when stress benchmarking the cpu… Is there an option i missed?
    Somebody?

  3. Hi Chris, i´m goig to make this mod, but this mod will make the back cover hotter, right? I use it a lot on my lap, so this could be a problem. Maybe i can make the mod, but leave the black termal film arround the shield? I think if in this case i cold get less temperature in the cpu but don´t burning my lap. Or this could cause too hot in the cpu and can´t be disipated out

    • Hi, it just gets a little warm, nothing of concern. I would remove that thermal insulation pad if you want the best results.

  4. What do you think about the role of the long iron plate under the lapbook keyboard?
    I installed ssd ‘2260’ and found that the cover did not close because of the iron plate, so I removed the iron plate, but now there is no problem.
    In my opinion it’s probably just adding weight.

    • It’s either one of two things, mostly likely a counterweight to stop it tipping. Or to make it feel heavier and give the impression of a stronger build and quality feel to it?

  5. When you were placing the copper shim, it sits on top of the central part of the CPU package, of course. But this copper shim looks quite close, in height, of those pins on top of the CPU package surrounding the central part of the CPU package, that serves a placeholder for the heat sink. I am worried about the copper shim touching those “pins”.

    Copper is very good electricity conductor, so do you think that If I misplace the copper shim and leave it touching 2 of those “pins”, it will short-circuit something?

    Where is located the second ram slot?

    • Reading again the article I see you say ” Carefully place the 15mm or 20mm thermal pad on top. Be sure it doesn’t touch any resistors near the CPU die. so you already adressed my concern.

      I guess I could place some thermal adhesive tape on top of the resistors, right? So I completely avoid this possibility.

      I have seen that this sticky tape inside laptops is of a really good quality because it does not degrade. It would be the same one to secure the M.2 SSD. Do you have a good reference of a good one you may have already used? Please point me to brand, model and shop if possible.

      I still cannot find the (second) ram slot to upgrade this laptop to 8GB.

      Thanks for the good article.

      • The RAM is soldered onto the motherboard. You can see Chris point to them in the full video review. This means you won’t be able to add more RAM to the laptop unless you’re fairly confident and skilled with soldering chips.

  6. Good job as always, Chris. Can you please benchmark chuwi lapbook 14.1 with geekbench 4 and see if any difference in performance. Wander how much geekbench 4 score differ before and after the mod, please….

    • It’s about the same, but I’ve noticed that it’s the GPU that seems to get all the benefit. Games are quicker, better FPS. So if you plan to play a light game of LoL for example, its really a must, also temps will get too hot.

      • Hey Chris,
        Thanks heaps for making this vid, very temped to give it a go.
        I bought one of these laptops for my misses. I installed the M2 SSD everything works great. Problem is when it’s plugged in charging it’s reaching 90c when completely idle (running win10) all drivers installed. When she uses word etc the laptop is shutting down from overheating, it’s basically unsuable when on charge, I’m going to have to try and RMA it with gearbest.. What sort of temps would you expect at idle when charging? It seems to last about 7 seconds on prime95 before hitting 106c and shutting down. Could it possibly be bad drivers? I’m really unsure 🙁 any help would be appreciated. Also it seems to have LED bless in the top left corner of the screen, but fairly minor so not too bothered.

        • Mine only got that hot gaming, could be bad thermal pad placement by the assembly line. If you want to solve the heat issues, then I highly recommend doing this mod here (above) to fix the high temps for good. Once I did that and installed the Realtek card reader driver to fix the disconnect and reconnect microsd card issue it’s one if the best budget laptops around for the price.

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