RichardKR Posted October 14, 2013 Share Posted October 14, 2013 I was wondering about my CPU temps. I have a 2 core (E8400) Intel CPU and just put a new cooling fan on it. These are the temps I'm getting now: Idle: 45C (each core) 80+% load: 58C each. Is this too much? Thanks. Quote Link to comment Share on other sites More sharing options...
V.T. Eric Layton Posted October 14, 2013 Share Posted October 14, 2013 Sorry, I'm in the U.S. I don't understand that C stuff. You can go to Intel's website and they will have the specs for your processor. Part of the specs will include the normal operating temperature ranges. That is the definitive answer you should seek, not the opinions you would receive from other users. Quote Link to comment Share on other sites More sharing options...
sunrat Posted October 31, 2013 Share Posted October 31, 2013 Missed this when you first posted. I live in a country that does use °C. Note that your temps will be affected by ambient, so unless that's the same you're not comparing apples with apples. That said, yours are well within spec. From memory, I think 70°C is when they start to be considered hot, but I'd be worried if it was always close to that. For comparison, my E8500 usually reports 40°C at idle in lm-sensors coretemp although it seems to be unable to report any lower temps. I've never seen it go over 50°C even when encoding large amounts of audio files. Airflow through the case is as important as a good HSF. I have an 80mm intake at the front and 120mm exhaust at rear which help a lot. Quote Link to comment Share on other sites More sharing options...
Guest LilBambi Posted October 31, 2013 Share Posted October 31, 2013 When it comes to technology, I go by Celsius as well, even though I am in the US. 40°C to 45°C seem to be normal for many computers. 40°C safer side and 45°C older AMDs likely...like mine. I hate to look at those temps in Fahrenheit ... scary! Yeah, I know it's the same temperature regardless, but ...104F sounds so much scarier to me than 40C. It's all a matter of degrees. Quote Link to comment Share on other sites More sharing options...
abarbarian Posted November 1, 2013 Share Posted November 1, 2013 http://www.cpu-world.com/CPUs/Core_2/Intel-Core%202%20Duo%20E8400%20EU80570PJ0806M%20-%20AT80570PJ0806M%20%28BX80570E8400%29.html Minimum/Maximum operating temperature ? 5°C - 72.4°C Quote Link to comment Share on other sites More sharing options...
raymac46 Posted November 12, 2013 Share Posted November 12, 2013 (edited) Ah the wonderful world of AMD CPU temperature reading. If I start off in the UEFI BIOS and let things stabilize (where the BIOS is running one of my 4 cores full blast) I get this: CPU Temperature 44.0 C System Temperature 22.0 C Now according to the research I've done on the Web this CPU temperature is taken off the socket and overestimates the Core temperature by about 7 degrees C - so that means that Core temperature in BIOS is 37 C. Not too bad. If I then boot into Linux and run the lm-sensors check I get this: fan1: 2129 RPM (min = 0 RPM) fan2: 0 RPM (min = 0 RPM) fan3: 1642 RPM (min = 0 RPM) fan4: 0 RPM (min = 0 RPM) fan5: 0 RPM (min = 0 RPM) temp1: +23.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor temp2: -7.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor temp3: +24.0°C (low = +127.0°C, high = +127.0°C) sensor = Intel PECI k10temp-pci-00c3 Adapter: PCI adapter temp1: +10.5°C (high = +70.0°C) (crit = +80.0°C, hyst = +79.0°C) And after I let things run a while I get this: fan1: 1917 RPM (min = 0 RPM) fan2: 0 RPM (min = 0 RPM) fan3: 1642 RPM (min = 0 RPM) fan4: 0 RPM (min = 0 RPM) fan5: 0 RPM (min = 0 RPM) temp1: +23.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor temp2: -7.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor temp3: +14.0°C (low = +127.0°C, high = +127.0°C) sensor = Intel PECI k10temp-pci-00c3 Adapter: PCI adapter temp1: +0.0°C (high = +70.0°C) (crit = +80.0°C, hyst = +79.0°C) So what's it all mean? Not much apparently. The temps in the first section are not really correct because the sensor software doesn't work all that well with AMD APUs. Maybe temp1 in this case is the System Temperature, but maybe not. The k10temp-pci-00c3 value is related to the actual Core Temperature but not directly. What it means is that in case 1 where the CPU core 1 was under full load, the Core was (70-10) or 60 degrees C under where the fan would have to apply full cooling to the chip. And in case 2 the Core was (70-0) or 70 degrees below the point where full cooling would have to be applied. I can conclude that the 2 cooling fans in the case are working effectively and the CPU is running just fine. I verify this with the Disk temperatures which are 25 degrees C for the big hard disk and only 22 degrees C for the SSD. Edited November 12, 2013 by raymac46 Quote Link to comment Share on other sites More sharing options...
abarbarian Posted November 12, 2013 Share Posted November 12, 2013 Cool numbers you have there, " temp2: -7.0°C " are you running on liquid nitrogen. Quote Link to comment Share on other sites More sharing options...
raymac46 Posted November 12, 2013 Share Posted November 12, 2013 Cool numbers you have there, " temp2: -7.0°C " are you running on liquid nitrogen. That's the temperature outside my house right now. Maybe I have a direct air line to the PC like you would for a furnace. 1 Quote Link to comment Share on other sites More sharing options...
sunrat Posted November 13, 2013 Share Posted November 13, 2013 sensors can give pretty obscure results. Here's mine: coretemp-isa-0000 Adapter: ISA adapter Core 0: +40.0°C (high = +78.0°C, crit = +100.0°C) Core 1: +40.0°C (high = +78.0°C, crit = +100.0°C) it8718-isa-0290 Adapter: ISA adapter.... fan1: 773 RPM (min = 0 RPM) fan2: 0 RPM (min = 0 RPM) fan3: 0 RPM (min = 0 RPM) fan4: 1433 RPM (min = 0 RPM) temp1: +25.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor temp2: +18.0°C (low = +127.0°C, high = +127.0°C) sensor = thermal diode temp3: -2.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor Ambient here is about 14°C. Coretemp won't show less than 40.0°C, but seems accurate over that. I recently compared some Intel temp monitor in Windows and temp 1 and 2 seem to be the same. I also have the liquid N on temp 3. I also like inxi for system info: roger@brain:~$ inxi -s Sensors: System Temperatures: cpu: 25.0C mobo: 18.0C gpu: 27C Fan Speeds (in rpm): cpu: 774 fan-2: 0 fan-3: 0 fan-4: 1433 It can show vast amounts of info depending on which option you add to the command. Quote Link to comment Share on other sites More sharing options...
V.T. Eric Layton Posted November 13, 2013 Share Posted November 13, 2013 My temps are just as strange... vtel57@ericsbane05~:$ sensors -f f71882fg-isa-0500 Adapter: ISA adapter +3.3V: +3.34 V in1: +1.33 V (max = +2.04 V) in2: +1.10 V in3: +0.89 V in4: +0.65 V in5: +0.46 V in6: +0.34 V 3VSB: +3.36 V Vbat: +3.28 V fan1: 3184 RPM fan2: 0 RPM ALARM fan3: 633 RPM fan4: 0 RPM ALARM temp1: +127.4°F (high = +491.0°F, hyst = +483.8°F) (crit = +491.0°F, hyst = +483.8°F) sensor = transistor temp2: +258.8°F (high = +491.0°F, hyst = +483.8°F) (crit = +491.0°F, hyst = +483.8°F) sensor = thermistor temp3: +87.8°F (high = +491.0°F, hyst = +487.4°F) (crit = +491.0°F, hyst = +487.4°F) sensor = transistor Ambient room temp here is 69 F right now. Note that temp2 is a faulty mobo thermistor. I know this and ignore that one. In Windows, I use a little app called HWMonitor. It corresponds well with "sensors" in Linux with the exception of the voltages. They're much more accurately represented in Windows than they are in Linux. Oh, and see the high temp of 491.0 F? That was from the other night when my processor overheated while playing a poorly tuned STALKER mod on STALKER Clear Sky. I removed the offending mod. Quote Link to comment Share on other sites More sharing options...
abarbarian Posted November 13, 2013 Share Posted November 13, 2013 My temps are just as strange... Certainly are ! Where is your minus temp ? Quote Link to comment Share on other sites More sharing options...
V.T. Eric Layton Posted November 14, 2013 Share Posted November 14, 2013 I'm in Florida. We don't have minus temps here. Quote Link to comment Share on other sites More sharing options...
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