Hi there,
I was looking for a low TPD CPU to go in my Dell R210, so replaced the stock i3-540 with a Xeon L3426 @1.87GHz and ever since I'm seeing a very high CPU temperature:
[2.3.3-RELEASE][/root]: sysctl -a|grep "dev.cpu.*.temperature"
dev.cpu.3.temperature: 68.0C
dev.cpu.2.temperature: 66.0C
dev.cpu.1.temperature: 67.0C
dev.cpu.0.temperature: 65.0C
and goes up to even 78C, which is unreasonably high to me for a 1.87GHz CPU. Also in the dmesg, there are reported during every boot:
[2.3.3-RELEASE][/root]: dmesg|grep -i temp
coretemp0: <CPU On-Die Thermal Sensors> on cpu0
coretemp0: Tj(target) value 69 does not seem right.
coretemp1: <CPU On-Die Thermal Sensors> on cpu1
coretemp1: Tj(target) value 69 does not seem right.
coretemp2: <CPU On-Die Thermal Sensors> on cpu2
coretemp2: Tj(target) value 69 does not seem right.
coretemp3: <CPU On-Die Thermal Sensors> on cpu3
coretemp3: Tj(target) value 69 does not seem right.
With 3.06GHz i3, it was mostly 44C - 47C, in average. With ipmitoolmost of the temp. readings are coming as Disabled but Ambient Temp is only 13C:
[code][2.3.3-RELEASE][/root]: ipmitool sdr elist|grep -i temp
Temp | 01h | ns | 3.1 | Disabled
Ambient Temp | 0Eh | ok | 7.1 | 13 degrees C
Planar Temp | 0Fh | ns | 7.1 | Disabled
CPU Temp Interf | 76h | ns | 7.1 | Disabled
Mem Overtemp | 20h | ok | 34.1 | Correctable ECC
Temp | 0Ah | ns | 8.1 | Disabled[/code]
Do you think the sensors are not properly working? Or is it because of 32nm vs. 45nm lithography, as 45nm tends to generate more heat? Power consumption is also a bit high to me for a 45 TPD CPU.
Or i was better off with i3-540? The whole practice was to minimize power consumption Can anyone help?
-San