CPU temps below ambient (i5-13400)

[galactica.phantom]

Hi! I have an i5-13400 and i'm having very low idle temps. I checked temps with CoreTemp, HWiNFO, HWMonitor, etc. On BIOS it's around 22-25°C but when i run, for example, HWiNFO, each core fluctuates between 10°C and 18°C (averaging 14-15°C). My room temp is around 16-17°C. HWiNFO, is between 19°C and 24°C. Should i be worried about condensation or anything, or this is normal?

The rest of the system:
ASUS B660-A ROG Strix WiFi D4
4x8GB Corsair Vengeance RGB Pro
H115i RGB PRO XT with Redux coolers
Zotac RTX 3060Ti Twin Edge OC
Seasonic Focus GX-850
Corsair 275R Airflow Black
Kingston Renegade 500GB PCIe 4.0
WD Blue SN550 1TB PCIe 3.0
Samsung EVO 860 1TB SATA
3x ID Cooling ARGB
LG 27" FullHD IPS G-Sync/FreeSync
Corsair K55 + Corsair Harpoon

 

[ir_cow]

Temp sensor must be off. Can't go below ambient unless you have a chiller or TEC.

 

[pressing on]

I think this is to do with minimum fan speeds/fan configuration. Could you post a screenshot of the part of HWINFO that shows fan speeds. And how are controlling fan speeds, BIOS settings or software.

 

[P4-630]

HWiNFO, each core fluctuates between 10°C and 18°C (averaging 14-15°C).

HWiNFO, is between 19°C and 24°C.

So which is it?

My room temp is around 16-17°C.

Then

HWiNFO, is between 19°C and 24°C.

That's possible.

 

[amd64skater]

Looks like you are idle so in lower power yeah temps are going to be cooler. It also sounds like you have good air flow. Condensation well you would need to be in a really cold environment for that to happen "like opening the window to let the winter air in".

 

[galactica.phantom]

I think this is to do with minimum fan speeds/fan configuration. Could you post a screenshot of the part of HWINFO that shows fan speeds. And how are controlling fan speeds, BIOS settings or software.

Hi. Water cooler fans are running at 1200rpm constantly.

So which is it?


Then

That's possible.

Individual core temps and package temps.

Looks like you are idle so in lower power yeah temps are going to be cooler. It also sounds like you have good air flow. Condensation well you would need to be in a really cold environment for that to happen "like opening the window to let the winter air in".

Thanks for your explanation. Then you say these temps are fine?

 

[pressing on]

Hi. Water cooler fans are running at 1200rpm constantly.


Individual core temps and package temps.


Thanks for your explanation. Then you say these temps are fine?

There is no need to run the AIO fans at full speed all the time. They are running at 100% because the AIO pump is running at 100% and the fans are working off the same PWM duty cycle. The three ID Cooling ARGB fans have a fairly high idle speed, around 900 rpm. All in all this is giving you tons of case airflow and no shortage of cooling when gaming. The only downside might be the noise the system makes at idle. If this does not bother you, then I would leave the system as it is.

 

[galactica.phantom]

There is no need to run the AIO fans at full speed all the time. They are running at 100% because the AIO pump is running at 100% and the fans are working off the same PWM duty cycle. The three ID Cooling ARGB fans have a fairly high idle speed, around 900 rpm. All in all this is giving you tons of case airflow and no shortage of cooling when gaming. The only downside might be the noise the system makes at idle. If this does not bother you, then I would leave the system as it is.

Max rpm for the aio fans is 1500, i put them 1200 because i hate when they ramp up and down. The noise doesn't bother me. The ID cooling fans are running at 1000rpm. Thanks for your time and explanation.
Another thing, while on BIOS, the CPU sits at about 23c but in Windows the package is at 18c. I know the cores run with lower temps compared to the package, but maybe there is a reading error or an error with the sensor. I had a 12400 and i trade it for this cpu and temps where higher while idling with the same ambient temp.

 

[pressing on]

Max rpm for the aio fans is 1500, i put them 1200 because i hate when they ramp up and down. The noise doesn't bother me. The ID cooling fans are running at 1000rpm. Thanks for your time and explanation.
Another thing, while on BIOS, the CPU sits at about 23c but in Windows the package is at 18c. I know the cores run with lower temps compared to the package, but maybe there is a reading error or an error with the sensor. I had a 12400 and i trade it for this cpu and temps where higher while idling with the same ambient temp.

HWINFO says that the package temp in Windows is a "... 256ms average of the hottest temperature of all Digital Thermal Sensors (DTS) within the package calculated by the CPU". The 12400/13400 difference might be because the 13400 has E-cores and the DTS values of these are being taken account when calculating the package temperature.

 

[galactica.phantom]

Then it is normal? Individual cores and package temps?

HWINFO says that the package temp in Windows is a "... 256ms average of the hottest temperature of all Digital Thermal Sensors (DTS) within the package calculated by the CPU". The 12400/13400 difference might be because the 13400 has E-cores and the DTS values of these are being taken account when calculating the package temperature.

Here's a pic of the BIOS. I think that different softwares are showing wrong CPU temps. Or does the BIOS utilizes a lot of CPU? Cheers.

 

[pressing on]

The way the BIOS calculates CPU temperature won't be the same as HWINFO. It may well be the temp of the hottest of the sensors on the CPU. But 25C is perfectly OK as a BIOS temp for a 13400. Under idle conditions in Windows you would see a lower number because the CPU would downclock to around 400 MHz and the core voltage would be more like 0.7V. Then you have software calculating average values. I don't think your temperatures overall should give you any concern.

 

[galactica.phantom]

The way the BIOS calculates CPU temperature won't be the same as HWINFO. It may well be the temp of the hottest of the sensors on the CPU. But 25C is perfectly OK as a BIOS temp for a 13400. Under idle conditions in Windows you would see a lower number because the CPU would downclock to around 400 MHz and the core voltage would be more like 0.7V. Then you have software calculating average values. I don't think your temperatures overall should give you any concern.

Ok, thanks very much for the detailed explanation. Have a nice day and cheers!

 

[Cvrk]

i don't know about below ambient but my ryzen 1700x in idle or some slow browsing was 24-27 Celsius.

not related: now my 5700x is 49 celcius and they say its normal

 

[Palindrome]

Seems fine to me. My 5600G will go as low as 26°C (ambient 23°C) when idling on the desktop. CPU fan is running at 500RPM or less, intake fans at a fixed 650RPM. The fact that your temps are being reported as below ambient is odd though, either your CPU temp sensor is a bit off or your thermometer for your room ambient is off by a few degrees. Either way, as others have stated, condensation is highly unlikely to be an issue, unless you live in a really humid environment and you cause massive temperature fluctuations.

 

[Hugis]

for reference
Ambient here atm 21 degrees

 

[galactica.phantom]

i don't know about below ambient but my ryzen 1700x in idle or some slow browsing was 24-27 Celsius.

not related: now my 5700x is 49 celcius and they say its normal

Hi. Next monday i'm borrowing a 13400F from a friend and i will see if it has the same behaviour. Your 1700X was below ambient too? Thanks!

Seems fine to me. My 5600G will go as low as 26°C (ambient 23°C) when idling on the desktop. CPU fan is running at 500RPM or less, intake fans at a fixed 650RPM. The fact that your temps are being reported as below ambient is odd though, either your CPU temp sensor is a bit off or your thermometer for your room ambient is off by a few degrees. Either way, as others have stated, condensation is highly unlikely to be an issue, unless you live in a really humid environment and you cause massive temperature fluctuations.

It's a tad humid here, but not too much. Thanks for your answer.

for reference
Ambient here atm 21 degrees

View attachment 295398

Hi. Thanks for the reference, i appreciate it. What is your BIOS CPU temperature. Because the BIOS show 25-27°C but in Windows, the package is around 21°C (the cores have pretty low temps). Thanks!!

 

[Hugis]

Hi. Thanks for the reference, i appreciate it. What is your BIOS CPU temperature. Because the BIOS show 25-27°C but in Windows, the package is around 21°C (the cores have pretty low temps). Thanks!!

here you go

 

[joemama]

There could be a gap between the temperatures measured from different methods
That gap probably made the CPU's temperature seem lower the ambient temperature while the 2 temperatures are very close

 

[galactica.phantom]

There could be a gap between the temperatures measured from different methods
That gap probably made the CPU's temperature seem lower the ambient temperature while the 2 temperatures are very close

here you go

View attachment 296022View attachment 296024

Hi! It was the CPU. They switched me the 13400 (ADL variant) for a 13400F (RPL) and now everything is ok. Thanks! And @Hugis, you're a genius for taking your time to show me the temps. Appreciate it!

 

[galactica.phantom]

here you go

View attachment 296022View attachment 296024

It seems that ADL based CPUs have a different temperature in Windows than in BIOS (specially using ASUS mobos). My 13400F showed correct temps, but it freezed continuously. I asked for a refund, and they sent me a 12700. This CPU has the same behaviour as yours and my previous 13400 (RPL, but based on ADL).

 

[AusWolf]

If your room is 16-17 °C, then 19 °C on your CPU is not below ambient. It's actually pretty impressive!

 

[galactica.phantom]

If your room is 16-17 °C, then 19 °C on your CPU is not below ambient. It's actually pretty impressive!

I think my room temp is above cpu temps. A guy from another forum told me that my cpu has an offset of -10c. I don't know if the mother is applying it or if the adl based cpus have these behaviour. A 13400f based on rpl showed the correct temps and the same as in bios, but a 13400 based on adl and the 12700 showed this behaviour. Bios temps are higher than in windows.

 

[Litzner]

If I remember correctly the thermal senors on processors can get incredibly inaccurate the further and further their delta gets from TJMax, but at TJMax they are very accurate, which is what the manufacturer cares about. I wouldn't be concerned about the reading.

 

[natr0n]

Ive gone below ambient. Example rinse radiator in sink plug it in fan creates evaporation and goes below ambient for a long while.


Nothing is impossible

 

[galactica.phantom]

If I remember correctly the thermal senors on processors can get incredibly inaccurate the further and further their delta gets from TJMax, but at TJMax they are very accurate, which is what the manufacturer cares about. I wouldn't be concerned about the reading.

Weird that the raptor lake one was pretty accurate. Seems like adl sensors are, as you said, pretty innacurate.