[SOLVED] Can't figure out why my CPU reaches 60c when idle ?

[rookiez7punk]

i can't figure out why my laptop cpu is way too hot.
Already done dusting and thermal paste already changed by profesional (changed after notice high temp),
already check the GPU will change from integrated to NVIDIA when gaming too.
and i check using SpeedFan, the fan is around 3K rpm when idle and 4K++ rpm when heavyload.
already check there's nothing running in the background with heavyload,
but the temp still reaching 50c after boot, heavyload like gaming reach 80c-100c, and after that the temp won't go below 55c even when idle

my Laptop is :
Asus Notebook X555LNB
Intel I5-5200U @2.2GHz
NVIDIA GeForce 840M
12GB Ram
Windows 10 Pro 64 bit
Bios AMI X555LNB.301, 20/11/2014

i check my temp using CoreTemp since i can't find the temp in bios
after some reading, some articles says updating bios might be solve this, but kinda scared to do that
the laptop is around 4-5 years old

 

[lvt]

It seems normal for a 5yo laptop, the thermal paste is much less effective and there might be a lot of dust on the cooling fans.

 

[CountMike]

i can't figure out why my laptop cpu is way too hot.
Already done dusting and thermal paste already changed by profesional (changed after notice high temp),
already check the GPU will change from integrated to NVIDIA when gaming too.
and i check using SpeedFan, the fan is around 3K rpm when idle and 4K++ rpm when heavyload.
already check there's nothing running in the background with heavyload,
but the temp still reaching 50c after boot, heavyload like gaming reach 80c-100c, and after that the temp won't go below 55c even when idle

my Laptop are :
Asus Notebook X555LNB
Intel I5-5200U @2.2GHz
NVIDIA GeForce 840M
12GB Ram
Windows 10 Pro 64 bit
Bios AMI X555LNB.301, 20/11/2014

i check my temp using CoreTemp since i can't find the temp at bios
after some reading, some articles says updating bios might be solve this, but kinda scared to do that
the laptop is around 4-5 years old

Just how "idle" is it ? Anything over 1-2% load is not true idle any more and would cause one or more cores to boost and so use higher voltage an therefore higher temps.

 

[rookiez7punk]

Just how "idle" is it ? Anything over 1-2% load is not true idle any more and would cause one or more cores to boost and so use higher voltage an therefore higher temps.

the cpu usage itself kinda fluctuate, sometimes goes to 20-30% from 0-5% when idle, but the temp never really go down below 45c, 45c is the lowest temp i get sometimes after boot

 

[CountMike]

the cpu usage itself kinda fluctuate, sometimes goes to 20-30% from 0-5% when idle, but the temp never really go down below 45c, 45c is the lowest temp i get sometimes after boot

Not too bad for a laptop.

 

[rookiez7punk]

Not too bad for a laptop.

the problem is when heavyload like gaming, even though the game i play were not that heavy, it's often reach 100c and sometimes a (!) appear on CoreaTemp

 

[geofelt]

What is your ambient(room) temperature?
That is the base upon which all temperatures start.
With nothing going on, I might expect to see 20-25c. over ambient.

I see many complaints about gaming laptops not performing well.
Usually gaming while plugged in.
One common cause is thermal throttling.
Laptop coolers must, of necessity be small and light.
The coolers are also relatively underpowered.
If you run an app such as HWMonitor or HWinfo, you will get the current, minimum, and maximum cpu temperatures.
For intel processors, if you see a max of 100c. it means you have throttled.
The cpu will lower it's multiplier and power draw to protect itself
until the situation reverses.
At a lower multiplier, your cpu usage may well be at 100%
What can you do?
First, see that your cooler airways are clear and that the cooler fan is spinning.
Used a balanced windows power profile and set the minimum cpu to something like 20%

It is counter-intuitive, but, try changing the windows balanced power profile advanced functions to a max of 90% instead of the default of 100%
You may not notice the reduced cpu performance.

 

[rookiez7punk]

What is your ambient(room) temperature?
That is the base upon which all temperatures start.
With nothing going on, I might expect to see 20-25c. over ambient.

I see many complaints about gaming laptops not performing well.
Usually gaming while plugged in.
One common cause is thermal throttling.
Laptop coolers must, of necessity be small and light.
The coolers are also relatively underpowered.
If you run an app such as HWMonitor or HWinfo, you will get the current, minimum, and maximum cpu temperatures.
For intel processors, if you see a max of 100c. it means you have throttled.
The cpu will lower it's multiplier and power draw to protect itself
until the situation reverses.
At a lower multiplier, your cpu usage may well be at 100%
What can you do?
First, see that your cooler airways are clear and that the cooler fan is spinning.
Used a balanced windows power profile and set the minimum cpu to something like 20%

It is counter-intuitive, but, try changing the windows balanced power profile advanced functions to a max of 90% instead of the default of 100%
You may not notice the reduced cpu performance.

my room is around 25-30c, the room i rent is really have a bad design with only 4 small ventilation, i use 2 fans in the room

the laptop always plugged in since the battery is not useable anymore

i use CoreTemp and the max often reach 105c and the Tj. max is 105c too, and the min only 48c

the fan is spinning at 4k rpm when heavyload, and already done dusting the fan and the airways.

already change the power profile but nothing seems taking effect

 

[geofelt]

Looking at photos, I do not see where the unit gets it's cooling air intake.
Perhaps you can divert one of your room fans to direct more cooling air towards the laptop intakes.

You may do better by re-applying thermal paste to the cpu and gpu cooler/s.
Depending on the laptop, disassembly may be easy or complex.
Find a youtube video on the process for your exact unit.
In time, paste can harden and dry out, leaving it less effective.
A repair shop would do it if you do not feel comfortable.

If the fresh air intake is on the bottom, there are cooling pads that might help.