Strange Core #3 temps.. thoughts?

I'm using CPUID Hardware Monitor to check the temps of my laptop. I noticed that Core #3 is always 7-10 degrees higher than Core 0,1 and 2. Actually core 0, 1 and 2 temps are almost at the same number. Does anyone also experience this? is this normal? Is it possible that core #3 is defective?


Also which core is it? and what are these "Parked" cores? :O

 

That is normal. Two of my cores are normally 5 to 10 Celsius hotter than the other two.

 

I see.. so I shouldnt be concerned about this? I just find it strange why a single core on mine is hotter compared to the other 3.. or what is cause of it..

 

It's pretty normal. 5c+ differences in core temps happens to me as well. Sometimes my core 0 is running with 20-30% load while everything else is at 0-5%, which causes it to run hotter than the others.

 

I get +10 celcius on one core too. When the cpu is stressed, the difference evens out.

 

download core temp in my sig below which imo gives more accurate readings.

 

Well you could try re-seating the heatsink and use a different application method for the thermal paste.

But sometimes it can just be that the temp sensor isn't great, the core should be fine even if the temp sensor is a little off.

 

yupyup its possible to slightly correct that "anomaly" by carefully repasting the cpu,but ull never get equal temps on all cores.

Sent from my Galaxy Nexus using Tapatalk 2

 

Odds are toward the CPU heatsink is mounted incorrectly. My 920XM did the same thing when it was mounted poorly and ever since the reseat, the cores don't spread any more than 2-3*C apart from one another at any given time.

 

Core temps can be better normalized with proper application of a good TIM, but I would not expect idle/non max temps to be anywhere near each other. Mostly one core gets the workload when the system is idling or not doing much, therefore it will run hotter than the others.

If you max it out and the core temps are still ~10C off, I would definitely consider a new paste job. Try HyperPI, Prime95 to heat her up...

I have an Envy 17 3200 CTO and this is the case for me (~75 max coolest core, ~86 max hottest core). It uses thermal pads though, and I am nervous to remove them in favor of paste due to gap issues....

 

i experience the same thing and ~7-10C seems like sort of a big difference between cores. if you're a sager owner i wonder if any of this is could be remedied by doing the washer mod that some have done to their gpu heatsink. my guess is that core #3 exists in the same corner of the chip as the gpu heatsink's troublesome screw (screw #2 as seen on page 2-15 of the service manual). i'm sure repasting and reseating the heatsink would even things out a bit.

 

Check CPU utilization graphic....

If one core would be around 5% and the third like 15% for example, it would be totally normal... Maybe some crap is pushing more on the 3rd core.
Keep Cool

 

what's so special about the third core? good idea though. interested to check it out when i get home.

 

That I can't tell you . But it may be the problem... who knows.

ps: Maybe there's CRACK on the 3rd core (only the computer and god KNOW :yes
Keep Cool

 

Can anyone tell which core is it here? Also, what are these "parked" cores? :O

 

Cores parked:
How To Disable CPU Core Parking For Multi-Core Processors - Ep. 20 - YouTube

The parked cores are probably all the Hyper threading cores...


ps: But check first if using external power and the laptop on maximum performance settings doesn't already unpark it. Because if you disable it, it will probably consume more battery (no idea)... Don't know much about parking (never seen my I7 2600K with parked cores)
Keep Cool

 

I'm not sure various articles have it right when it comes to tweaking core parking settings. I've seen a few references mention this "setting max value = 0" without rationale as to what this setting actually does. It's possible that the settings were different with Vista or Windows 7 (pre-SP1).

But with Windows 7 SP1, this setting doesn't make any sense. For example the name for the setting mentionned in the video is: "Processor performance core parking min cores", and it's description states: "Specify the minimum number of unparked cores/packages allowed (in percentage)". Therefore, if one wants to turn-off core parking, then it may make sense to set the "MinValue=100" and "MaxValue=100" which would imply that no less than all cores are allowed to be unparked. But this is only a boundary value for the actual setting which is specified under another registry key for the specific user's custom power profile settings. It's probably best to reveal these settings by setting Attributes=0 (Attributes=1 hides the settings) for various power profiles settings and then change them from the Advanced power options panel in windows. If you want to tweak core parking settings, I would recommend the following and pay attention to the wording in each setting's description in the advanced power options:

Turn-off core parking: (e.g. get max performance for multi-threaded applications)
http://forum.notebookreview.com/sager-clevo/416916-clevo-bios-thread-52.html#post8773184

To force core parking: (e.g. to lower CPU temperature, save battery)
http://forum.notebookreview.com/sager-clevo-reviews-owners-lounges/655833-official-clevo-w110er-sager-np6110-owners-lounge-65.html#post8813331