Actually on all new Intel desktop boards, there is a new features called ProcHot and it is the CPU Die temperature. It is within the range of 0 < Temperature < -100 Celsius.
temperature at which the CPU will start throttling itself in order to remain cool enough. Throttling means skipping clock cycles.
If it is showing ProcHot -21 C, it indicates that the cpu have 21 degrees to go to make the cpu to start throttling itself.
If it returns 0, the CPU will assert prochot and start throttling.
So if you are using the new Intel Desktop Utilities, it will use the same principle to calculate the temperature and display it in the chart/diagram.
So what you can do, check the CPU temperature in the BIOS, from Advanced >> Hardware Monitoring.
Check the Thermal Specification for the CPU if it is still within the range of operation.
Get your CPU sl number and search in the link below.
If it is much over the range then, check the following:
Make sure that you have a PSU Atx Version 2.2 at least.
Make sure that the chassis is TAC - Thermally Advantage Chassis
Check for proper aeration in the chassis. (cable)
Re-integrate the cpu with new small amount of thermal paste (clean the cpu before)
There is a section in the bios where the fan speed and features are shown.
Bios >> Advanced >>
There is two sections:
(i) Fan Control
(ii) Hardware Monitoring
Note: on some AMT board like DQ45CB and DQ45EK, there is a management engine control for
fan. You will need to access the MEBx Bios by pressing Ctrl + P.
Hope this helps a bit.
Thank you for your explanation what is proHot.
ProcHot (IDU) shows -62C
Core temp (Everest) shows 40C
This means the throttling should be started at 102c
The motherboard keeps fan speed minimal until ProcНot > -30 and CoreTemp > 70
So temperature ALWAIS rises beyond processor thermal specification (71C, http://processorfinder.intel.com/details.aspx?sSpec=SLB6B) just because it keeps fan speed minimal.
I never achieve throttling but always jump beyond thermal specification temperature under FPU load.
BIOS fan control settings give me nothing.
So probably the issue is in the fact that throttling temperature in my CPU is set far beyond thermal specification temperature?
First thing to do is to:
Update the Bios to the latest one Version 0097 using the recovery mode:
2) Where are you reading the temperature from?
3) Are you using any tools? If yes which one
After the BIOS Update, try to read the temperature from the BIOS.
a) Advanced >> Hardware Configuration
ProcHot must be negative.
For example, if the temperature is -21C, this means that it is still ok, as you have 21 more degrees to go for it to be critical.
b) Use the tools from Intel to read the temperature
Note: This cpu can go up to 71.4C (even 5c more i will say).
If you have temperature higher than 75C using the Intel Desktop Control Center, then it can be due to any of these:
a) bad integration
b) PSU not ATXv2.2
c) Chassis is not TAC (Thermally Advantage Chassis)
Try different bios version
Hope this may help you.
I have a DQ45CB mobo and I am having the CPU fan surging problem, too. I checked the BIOS setting for Fan Control and it is set "Always". When I try to boot to the ME submenu with <control>P, I am asked for a ME password. What? Is this password set to a default value? I never set one when I built this system... where is the documentation on this thing?
The default password is 'admin' (case sensitive). Please see the Intel documentation for the rest of the info on configuration.
My bad. Here is the link to MEBx pdf. Its been awhile since I messed with this stuff but the pdf seems to be a walk through of the different BIOS menus.
Once you manage to enter the MEBx, you can refer to the picture below:
Note: If 'admin' does not work, you may need to reset the bios by going into the maintenance mode and clear amt password.
Then default password will be 'admin'
Let us know how it goes. Thank for answering msb.
All the best,