Hi there,
In our office we purchased two new identical setups with the main goal to compile source code (Android OS) in a shorter period.
We ended up with the following core components:
CPU: AMD FX-8350
Motherboard: Gigabyte 990FXA-UD3
For this task we are using Ubuntu 13.10 / 64 bit.
As info, with the new setup the code compiles in 40 minutes (full build) which is a major upgrade opposed to former 2.5+ hrs.
However, we noticed on both our systems, that when building the source using all the resources available through the new CPU (make -j16) a heat issue arises. With the Ubuntu thermal indicator widget temperatures of 75C are reached during the process of compilation.
This has been tested with the stock cooler and the Arctic Freezer PRO Rev. 2 mounted onto the CPU on both systems. For the process we cleaned both cpu and cooler with isopropyl alcohol and used Revoltec thermal paste. Since no differences between either of the coolers (other than noise) became apparent, it is probably save to say that this is not an issue of heat dissipation.
Having read several posts about maximum temperature of the CPU, none of the answers are very coherent. The setup is pretty much stock, no OC settings have been touched.
As a consumer I would expect that having a stock system would now allow the hardware to be overheated, however reading several posts indicating that max temperatures should not cross the 65C mark, the questions arises if the frequency should be capped in the system. When checking
/sys/class/hwmon/hwmon0/device/temp1_crit the value indicates 8000 (for 80C) however, I am not sure if this value is sourcing from the CPU itself. /sys/class/hwmon/hwmon0/device/temp1_max is set to 70C.
It is possible with the CPU frequency indicator to cap the CPU at 3.4 GHz where temperature is steady at 50C.
So the question: is 75C above the rating of the processor? If 75C is alarming for the 8350, then is it possible that the average user does not reach this point because using 8 cores at the time is in normal operation mode a rarity?
Thanks for taking the time to read this and answers would be very much appreciated.
PS:
If you want to test this and have no widget installed, then you can find the temparature information like this:
In our office we purchased two new identical setups with the main goal to compile source code (Android OS) in a shorter period.
We ended up with the following core components:
CPU: AMD FX-8350
Motherboard: Gigabyte 990FXA-UD3
For this task we are using Ubuntu 13.10 / 64 bit.
As info, with the new setup the code compiles in 40 minutes (full build) which is a major upgrade opposed to former 2.5+ hrs.
However, we noticed on both our systems, that when building the source using all the resources available through the new CPU (make -j16) a heat issue arises. With the Ubuntu thermal indicator widget temperatures of 75C are reached during the process of compilation.
This has been tested with the stock cooler and the Arctic Freezer PRO Rev. 2 mounted onto the CPU on both systems. For the process we cleaned both cpu and cooler with isopropyl alcohol and used Revoltec thermal paste. Since no differences between either of the coolers (other than noise) became apparent, it is probably save to say that this is not an issue of heat dissipation.
Having read several posts about maximum temperature of the CPU, none of the answers are very coherent. The setup is pretty much stock, no OC settings have been touched.
As a consumer I would expect that having a stock system would now allow the hardware to be overheated, however reading several posts indicating that max temperatures should not cross the 65C mark, the questions arises if the frequency should be capped in the system. When checking
/sys/class/hwmon/hwmon0/device/temp1_crit the value indicates 8000 (for 80C) however, I am not sure if this value is sourcing from the CPU itself. /sys/class/hwmon/hwmon0/device/temp1_max is set to 70C.
It is possible with the CPU frequency indicator to cap the CPU at 3.4 GHz where temperature is steady at 50C.
So the question: is 75C above the rating of the processor? If 75C is alarming for the 8350, then is it possible that the average user does not reach this point because using 8 cores at the time is in normal operation mode a rarity?
Thanks for taking the time to read this and answers would be very much appreciated.
PS:
If you want to test this and have no widget installed, then you can find the temparature information like this:
Bash:
user@host:~$ ll /sys/class/hwmon/hwmon0/device/temp1_*
-r--r--r-- 1 root root 4096 Mär 27 22:21 /sys/class/hwmon/hwmon0/device/temp1_crit
-r--r--r-- 1 root root 4096 Mär 27 22:21 /sys/class/hwmon/hwmon0/device/temp1_crit_hyst
-r--r--r-- 1 root root 4096 Mär 27 22:21 /sys/class/hwmon/hwmon0/device/temp1_input
-r--r--r-- 1 root root 4096 Mär 27 22:21 /sys/class/hwmon/hwmon0/device/temp1_max
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