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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: CPU temperatures |
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Thread Status: Active Total posts in this thread: 9
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
hi, I am running boinc on my new computer. I have it going at 100% all the time, i downloaded a fan speed application which wont let me manually control my fans but is giving me temperature readouts of my cores, what is the recommended temp range for the cpus?, is there a threshold that can damage the CPUs? does anyone know of a way of manually turning up my fans on a dell inspiron E1705
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
i am running at about 59c, is that too much?
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Dirk Gently
Senior Cruncher England Joined: Mar 1, 2005 Post Count: 153 Status: Offline Project Badges: 
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59 dedgC sounds ok. If you are crunching, your CPU fan is probably already runing flat out.
----------------------------------------My P4D runs at about 60-65 degC depending greatly on room temp. I have always treated 70degC as a max - I have set BIOS temp alarm at 70degC. If it goes above this I clean out my CPU heatsink/fan. Sounds like you have the SpeedFan program or suchlike - useful to monitor and display CPU and other temps (SMART hard drive temps for instance). Control of fan is best left to BIOS. |
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retsof
Former Community Advisor USA Joined: Jul 31, 2005 Post Count: 6824 Status: Offline Project Badges: 
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If you have a desktop PC, you can get a cheap case fan for only $5-$10 U.S. Look for a spot for it immediately below the power supply at the rear of the case, at least on these standard cases. They come in different diameters, so check the 4 screw holes and get one that fits.
----------------------------------------They also come with a tiny connector pin that hooks to a spot on the edge of the motherboard labeled case fan, chassis fan, fan#2 or something like that. Computers being what they are, the numbers may read fan#0 and fan#1. The standard fan monitors that come with the motherboard will monitor the fan speed and temperatures for CPU fan, power supply fan, and case fan. They should drop the temperature by 5 degrees C or so (guess, your case airflow may yield more or less). Here's a sample from the monitors on 2 of my own computers, both crunching at 100% utilization: AMD64 4000+ socket 939 2.4GHz with ASUS A8NE and ASUS PC probe CPU fan 2518 RPM Power (supply) fan 4518 RPM Chassis fan 2636 RPM CPU 48 degrees C MB 36 degrees C AMD64 3200+ socket 939 2.0GHz overclocked to 2.4GHz with ASUS A8VMX and ASUS PC probe II CPU fan 3461 RPM doesn't seem to monitor power supply fan Chassis fan 2616 RPM CPU 40 degrees C MB 35 degrees C Note: This Venice core CPU is newer than the other one, and runs cooler, even overclocked. Note: AMD speed of 2.4GHz crunches with the same effort as a 3.0GHz-3.2GHz Pentium. Note: The second one started out as a Dell 1.7GHz pentium computer, but got transmogrified into a 2.0GHz AMD. CPU, Mobo and case were replaced. Other standard components were reused.
SUPPORT ADVISOR
----------------------------------------Work+GPU i7 8700 12threads School i7 4770 8threads Default+GPU Ryzen 7 3700X 16threads Ryzen 7 3800X 16 threads Ryzen 9 3900X 24threads Home i7 3540M 4threads50% [Edit 8 times, last edit by retsof at Apr 8, 2007 3:42:45 AM] |
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Dirk Gently
Senior Cruncher England Joined: Mar 1, 2005 Post Count: 153 Status: Offline Project Badges:
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Interesting Retsof. I have heard that generally the AMDs run at lower clock speed and lower power dissipation - and hence cooler- than Intels.
----------------------------------------The specified max power dissipation for my P4D 945 is around 90W, which I think is PER CORE. 180W is a lot of heat! The max specified CPU temp is 100degC, but I suppose it is a case of the lower the better. I might add that this 3.4GHz P4D is overclocked (and stable) at 4.07GHz! I ditched the original Intel CPU cooler in favour of a self contained heatpipe cooler. This is huge. There is only just room for it and fitting was fiddly. It lowered CPU temp by about 8 degC. I have case fans galore - 5 in addition to PSU fan, but these seme to cause more problems with dust than they are worth. Six Hard drives does not help. I have long toyed with the idea of using one of those Liquid coolers, but some of them are very expensive, and it is difficult to tell how well they will fit. I can't tell how effective one of these would be. None of the cooler manufacturers are very forthcoming with specs of exactly how much cooling effect their devices have - specs of degC/W for instance. I saw a nice pic in the forums here of someones PC that has one fitted - I would be interested to know how effective it was  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Power dissipation is for the whole CPU not per core.
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
IBM just published a technique of micro-engravings in CPU's to improve how the thermal paste gets distributed when the heat sync is placed... effective heat transfer improved by 40% and reducing the do-it-yourself to less of an art.
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WCG
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Dirk Gently
Senior Cruncher England Joined: Mar 1, 2005 Post Count: 153 Status: Offline Project Badges:
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Power dissipation is for the whole CPU not per core. Thank you! Yes you are right! I just looked and the intel spec gives 95W as the spec for the whole CPU. I was misled by Sisoft Sandra, which says "Core Power", in the same breath as other parameters "per Core". Still 95W causes a lot of heat! Because of the overclocking, I suspect that it is running at more than this. I recently upgraded from the 90nm P4 830, which generates 130W. This used to run at about the same temp as the new one now (when overclocked). I have also noticed the thermal spec as 63.4 degC, not 100 degC, so I think I do need to do something about improving cooling. |
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