FW13 Getting really hot while charging

  • Which OS (Operating System)? Windows 11
  • Which Framework product? Laptop 13, AMD 7040 Series

My FW13 gets really hot while charging. I contacted support but none of the fixes are working. I don’t think it’s cause for enough concern that I’d need to get it RMA’d but it’s still annoying. The only thing I’ve done to my laptop is swapped the thermal paste with PTM7950 but the laptop’s been doing this since before that. Also, I am using it on my bed but I don’t think that would be enough to get it as hot as it does. I also have a M1 Pro MBP and that barely even gets warm when it’s charging despite the same conditions. Anyone have any ideas? My only “solution” has been to put something to prop the back of the laptop off my bed and that only causes the fans to slow down a little bit.

Honestly, the 7840U FW13 just gets really hot period. The fan curve definitely could use some work, as in my experience they’re very strongly prioritizing silence over comfort.

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Which part of the laptop gets really hot? CPU? battery? chassis? If you use it on bed the air intake might get blocked. Windows 11 may use lots of CPU power on background tasks while charging. PTM7950 helps heat dissipation but it doesn’t reduce power consumption.

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The bottom case, mostly around the CPU. Ik when it’s on my bed the air intake is blocked. Whenever I hear the fan start spinning up, I prop the back of the laptop up to make sure it isn’t choked. What confuses me though is when I run Cinebench and have the fan at max speed, the CPU doesn’t even go above 65C. I’m assuming this is just a case of “the fan curve is geared towards silence and not thermals” so I’m playing with the fan curve in the Framework Control app on GitHub.

Are you sure you are reading the correct sensor? cpu_f75303@4dmay show 65C or lower, but it’s the much highercpu@4c the real CPU temperature, often 80~100C during stress testing.

The fan speed control defaults using cpu_f75303@4dthan cpu@4creading. During stress testing, the CPU will go up to 90C or even 100C before the f75303 temperature increases to start the fan, then the fan will speed up as f75303 heats up, eventually cooling the CPU(cpu@4c/Tctl) to about 85C.

--sensor name -------- temperature -------- ratio (fan_off and fan_max) --
local_f75303@4d 318 K (= 45 C) 16% (313 K and 343 K)
cpu_f75303@4d 321 K (= 48 C) 25% (319 K and 327 K)
ddr_f75303@4d 317 K (= 44 C) N/A (fan_off=401 K, fan_max=401 K)
cpu@4c 324 K (= 51 C) 0% (376 K and 378 K)
What software are you using to adjust fan curve on Windows 11? Can you read both cpu_f75303@4d and cpu@4c?

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The laptop pulls in air from the bottom. So, you need to make sure there is a gap between the laptop and the surface it is on.

If it is on a solid surface, the laptop feet will keep the gap.

If it is on a soft surface, i.e. a sofa or a bed or your lap, the laptop feet will not keep any gap at all, and so the laptop will not get enough cooling air.

I therefore use a tray under the laptop, to provide the hard surface, so the laptop is happy and keeps cool.

I use this GitHub - ozturkkl/framework-control: An app with a GUI that allows users to control the Framework Laptop embedded features via the "framework-system" and the "inputmodule-rs". Other EC (Embedded Controller) features may be added at a later time. for the fan control, and HWiNFO for monitoring temps myself. I don’t know what sensors framework control uses. and the 65C is the highest temp I’d see running the stress test at 100% fan speed.

Of course it gets hot if it is sitting on a fluffy bed. Go put a down coat on and run for a mile outside in 90+ degree heat.

Yes the chassis gets hot because it is made of a thernally conductive metal that is trying to radiate heat away but it can not since it is insulated on a bed.

If the desire is to not have it heat up as much while charging using a 30w charger will make a big difference. It is also easier on the battery.

Might as well mention it now, leaving the battery limited to 80% or lower will be better for the longevity of the battery.