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Category: Support
Forum: BOINC Agent Support
Thread: Feed back on AMD Phenom II Black Edition |
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Thread Status: Active Total posts in this thread: 44
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Fred De Condappa
Cruncher Joined: Nov 1, 2010 Post Count: 17 Status: Offline |
Indeed...frustratingly.
Well, I have two choices. If I am not home, I run 3 out of 6 cores and temps stay low.... or I aircondition the small room (luckily) to 27 celcius and then I can run all 6 cores with the CPU running at about 55celcius and the cpu fan at about 3900-4000rpm. If I buy an watercooling kit, would that make a big difference? I am running the stock cpu fan with no overclocking. |
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KerSamson
Master Cruncher Switzerland Joined: Jan 29, 2007 Post Count: 1684 Status: Offline Project Badges: 
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You should not try to micro-manage too much.
----------------------------------------Having only one sensor is not so bad, since in case of an efficient cooling the temperature difference between the cores would probably stay within a range of 2 or max. 5°C. In all cases, it is the observation I did with Intel Quad core CPU with standard Intel cooler, especially by Xeons. I operate currently two Phenom II x6 both with Ubuntu 10.04 64bit with 6 cores at 100% load. By 26°C room temperature, the 1055T has an average CPU temperature of around 48°C and the 1090T is close to 60°C. Because of some geometry concerns, the cooling of the 1090T is a little bit less efficient: the ventilator is pulling through the cooler instead of pushing. However, the botch systems run perfectly well and relatively quiet. With the standard AMD cooler, delivered with the CPU, the noise is much higher and the cooling less efficient. In comparison, the Intel Q6600 and Q9450 could reach a CPU temperature of 68°C with the standard noisy Intel cooler. In all cases, you have to clean the hosts regularly (e.g. every 3 months) in order to ensure that coolers and ventilators are clean. Cheers, Yves |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
The Phenom II's do not report their true temperature.
Temperature is measured as distance from maximum allowable temperature, which AMD has not disclosed. If one CPU is reading 60C, and another is reading 65C, the only thing you know is the relative distance between them is 5C, you know nothing about their true temperature. From the Author of CoreTemp: "Core Temp displays the temperature reported to it by the CPU. I've explained it many times, these processors report temperatures which are not absolute. There is usually a 10-15C delta that should be added to the readings to see the real temperature value." http://www.alcpu.com/forums/viewtopic.php?f=62&t=800 "K10 does not report actual core temperature, it reports a "floating" temp, since without knowing this offset you won't be able to get the real, absolute temp." http://www.alcpu.com/forums/viewtopic.php?f=88&t=577#orb |
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KerSamson
Master Cruncher Switzerland Joined: Jan 29, 2007 Post Count: 1684 Status: Offline Project Badges:
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Thank you Questar for the information.
----------------------------------------The temperature difference between cores I mentioned was only related to Intel CPUs. The point you raise is the accuracy of the temperature measurement which is only known by the manufacturer.  Cheers, Yves |
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