Hysteresis Temperature..............

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AZK6er
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Hysteresis Temperature..............

Post by AZK6er »

I have a Tyan S1590S Mobo with a VIA System Health Monitor Software package to monitor system Temps, Voltages and such. I have Calibrated my "CPU Over-Heat Temperature" to 50 C, But don't know what to set my "CPU Hysteresis Temperature" value to (I have it set to 50 C also, just because). <br><br>1) what is it<br>2) what should I set it to (both settings can be set to set off alarms if exceeded)<br><br>Elf or another Electronic Geek might know cause I sure don't.<br><br>Any help appreciated. <p><a href="http://home.att.net/~oren.b.thompson/" target="_blank"><img src="http://home.att.net/~oren.b.thompson/USAFlag.gif" border="0"></a> </p><i></i>
DrBob
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Hysteresis Temperature..............

Post by DrBob »

I have the same question. Here is my experience.<br><br>I know that hysteresis refers to the effect of previous conditions on a given physical parameter; that is, the effect of the systems "history". So I think it is designed to monitor fluctuations in temperature.<br><br>The genesys logic monitoring software that came with my DFI K6BV3+/66 MoBo has a default setting of 40 C.<br>I guess it looks for temperature fluctuations by setting a lower limit for the temperature value. When I booted today the alarm went off until the temperature rose above 40 C. So, I set the hysteresis temperature to 30 C. Note: I just started using the software yesterday.<br><br>I guess they thought it would be silly to have a low temperature limit so they called it hysteresis temperature. Hay overclocking gurus, is it possible to overcool a CPU?<br> <p></p><i></i>
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AZK6er
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Re: Hysteresis Temperature..............

Post by AZK6er »

So what you're saying is .......?<br><br>That the more that you use a CPU then the more current goes thru it and in time starts to break down the properties of the CPU and in turn lowers the Max. Temp that said CPU can operate at safely ??<br><br> <p><a href="http://home.att.net/~oren.b.thompson/" target="_blank"><img src="http://home.att.net/~oren.b.thompson/USAFlag.gif" border="0"></a> </p><i></i>
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Nohr
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Re: Hysteresis Temperature..............

Post by Nohr »

Here's what a search found at <!--EZCODE AUTOLINK START--><a href="http://memsic.com/glossary.htm">memsic. ... <!--EZCODE AUTOLINK END--><br>It seems to make some sort of sense, heh.<br><br>temperature hysteresis – the difference in output at any temperature in the operating temperature range when the temperature is approached from the minimum operating temperature and when approached from the maximum operating temperature with zero input applied. <p></p><i></i>
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AZK6er
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Re: Hysteresis Temperature..............

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Yea, RIGHT !!!!<br><br>Please explain...<br> <p><a href="http://home.att.net/~oren.b.thompson/" target="_blank"><img src="http://home.att.net/~oren.b.thompson/USAFlag.gif" border="0"></a> </p><i></i>
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Re: Hysteresis Temperature..............

Post by Nohr »

I found the info and now you want me to explain it to you? Geez, some people! <!--EZCODE EMOTICON START :b --><img src=http://www.ezboard.com/intl/aenglish/im ... tongue.gif ALT=":b"><!--EZCODE EMOTICON END--> <p></p><i></i>
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AZK6er
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Re: Hysteresis Temperature..............

Post by AZK6er »

Hey, all I do is the World News. I just asked a simple question, you answered, now I'm running around feeling like a dumb #$%medoegrm.<br><br>Damn, I wish I had finished High School. <p><a href="http://home.att.net/~oren.b.thompson/" target="_blank"><img src="http://home.att.net/~oren.b.thompson/USAFlag.gif" border="0"></a> </p><i></i>
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Nohr
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Re: Hysteresis Temperature..............

Post by Nohr »

Should have aimed a bit higher than your "thurd greyd ejimuhcashun". <p></p><i></i>
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AZK6er
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Re: Hysteresis Temperature..............

Post by AZK6er »

Boy Howdy.... I guess so.<br><br><!--EZCODE EMOTICON START ;) --><img src=http://www.ezboard.com/intl/aenglish/im ... s/wink.gif ALT=";)"><!--EZCODE EMOTICON END--> <p><a href="http://home.att.net/~oren.b.thompson/" target="_blank"><img src="http://home.att.net/~oren.b.thompson/USAFlag.gif" border="0"></a> </p><i></i>
DrBob
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Classic Example

Post by DrBob »

One classic example is the magnetic properties of materials. Say you start at 600 degrees and raise the temperature to 700 and go back down to 600 degrees. The magnetic properties of a certain material at 650 might differ when you go up from 600 to 650 than when you go down from 700 to 650. Even though you consider the same property at the same temperature it sometimes makes a difference if you reach that temperature by going up from a lower value or down from a higher value. That is, the "history" of how you reached the temperature can matter. Microscopically it might be caused by the flow and rearrangement of magnetic domains etc. <br><br>That is why I think the software monitors fluctuations in temperature. This is a bit off from what is usually meant by hysteresis but it makes some sense in that it is monitoring changes over time. This is because temperature can be considered a valid output as well as an input. Other input and outputs are also possible.<br><br>Current and voltage is a good example. You start at zero volts and raise a system to 5 volts and get some current out. Then you raise it to 10 volts and back down to 5 volts. This current is now different than before at the same 5 volts. Kicking the system up to 10 volts caused a change in the system that effects further measurements. <br><br>Have you had enough? <p></p><i></i>
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Re: Classic Example

Post by Nohr »

If it monitors changes, I would think the program would give you an average temp and two other numbers for how much the temperature varies below and above the average. I don't know why you'd have to set it to anything at all. <p></p><i></i>
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Re: Classic Example

Post by AZK6er »

Yea Nohr and Dr. Bob.....<br><br>Why would I want to set the Hystersis temp. anyway. And to what ?? <p><a href="http://home.att.net/~oren.b.thompson/" target="_blank"><img src="http://home.att.net/~oren.b.thompson/USAFlag.gif" border="0"></a> </p><i></i>
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Re: Hysteresis Temperature..............

Post by io333 »

>>>Hay overclocking gurus, is it possible to overcool a CPU?<br><<<<br><br><br>If you cool it below absolute zero, the electrons move faster than light and the answer to the question appears before it is asked. Then the universe winks out. So BE CAREFUL!!!! <p></p><i></i>
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