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 Concerns on IPC2 i7 
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Joined: Thu Nov 13, 2014 9:29 am
Posts: 18
Post Concerns on IPC2 i7
I am a IPC2 customer with two models (core i5 and core i7 models).
I just sent my i7 for an FACE Gigabit upgrade and get it back and I started to play with it..

I am trying to install a Linux on it and I realized that it is constantly reporting 75°C with almost 0% CPU utilization...
For the first 10 seconds I was thinking about disk / memory but, to give an idea and a comparison with my core i5 unit with exactly the same SSD / same memory / same Linux version, it is running at 40° when the PC is doing nothing (which is acceptable and normal).

On my i7 just a little task is making the temperature reaching very high level (90-100°C) and it is almost unusable..I am not expecting this on a high level product like the IPC2 i7 which is one of your flagship / most expensive unit.
It is not possible to use more than 10% of the CPU Power before it beggind to throttle.

What can I consider a normal temperature comparing to your baselines?
I think there is definitely a problem when I compare against my i5 even if i7 has more power and heats more but it is almost twice the temperature of the i5.

Some technical information :
Running some stress test on core i5 IPC2 :

-100% CPU utilization during 10 minutes :
top
%Cpu0 : 100.0/0.0 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]
%Cpu1 : 100.0/0.0 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]
%Cpu2 : 99.3/0.7 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]
%Cpu3 : 100.0/0.0 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]

sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +86.0 C (crit = +100.0 C)
temp2: +86.0 C (crit = +100.0 C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +86.0 C (high = +100.0 C, crit = +100.0 C)
Core 0: +86.0 C (high = +100.0 C, crit = +100.0 C)
Core 1: +81.0 C (high = +100.0 C, crit = +100.0 C)

i7z
Real Current Frequency 2593.76 MHz [99.76 x 26.00] (Max of below)
Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % Temp VCore
Core 1 [0]: 2593.76 (26.00x) 100 0 0 0 86 0.9591
Core 2 [2]: 2593.76 (26.00x) 100 0 0 0 82 0.9569


-100% CPU utilization during 10 secondes !!! :
top
%Cpu0 : 100.0/0.0 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]
%Cpu1 : 100.0/0.0 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]
%Cpu2 : 100.0/0.0 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]
%Cpu3 : 100.0/0.0 100[|||||||||||||||||||||||||||||||||||||||||||||||||||||]

sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: 95.0 C (crit = +100.0 C)
temp2: +95.0 C (crit = +100.0 C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +99.0 C (high = +100.0 C, crit = +100.0 C)
Core 0: +99.0 C (high = +100.0 C, crit = +100.0 C)
Core 1: +95.0 C (high = +100.0 C, crit = +100.0 C)

i7z
Real Current Frequency 1080.49 MHz [99.76 x 10.55] (Max of below)
Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % Temp VCore
Core 1 [0]: 1109.54 (11.01x) 92 60.8 0 0 96 0.6619
Core 2 [2]: 1012.76 (10.15x) 94 63.5 0 0 95 0.6650

On important thing I noticed which can help to troubleshoot : when I run my test on my i5 it cames very hot when I put my hand on it (which is not a problem as it was 100% CPU)
When I ran the test on my i7 it was cold and I am sure it is the result of the processor is lower the frequency quite a lot and throttle a lot, I get almost half the power of my i5..

Is it possible that the processor is badly reporting the temperature and then the system starts to throttle to protect the CPU ? It is easy to see that as soon as I hit my stress test button I only need to wait 2 seconds to see 99% on lm_sensors (to compare on i5 it is gradually adding 2 or 3° every minutes, it confirms it has something wrong somewhere on my unit.)


Many thanks,


Fri Jun 05, 2015 10:57 pm
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Site Admin

Joined: Mon Mar 16, 2009 2:11 pm
Posts: 2338
Post Re: Concerns on IPC2 i7
The quick rise in reported CPU temperature in the IPC2-i7 while the case remains cool indicates insufficient thermal coupling between CPU and heatsink.

I suggest to investigate the problem further with our technical support and then decide how to proceed for ensuring you have a fully functional system.
Please email support@fit-pc.com with the case description and IPC2 serial number.

_________________
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Irad Stavi
fit-PC forum admin

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Wed Jun 10, 2015 2:51 pm
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