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Topic Title: CPU's How cold is too cold?
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Created On: 01/04/2005 12:52 AM
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 01/04/2005 12:52 AM
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Bit Slicer
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I'm wondering if there's a breakpoint temp on athlons. The point that getting any colder wont help oc etc?
 01/04/2005 12:58 AM
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amdrulesanduknowit
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absolue zero

idk i dont really understand ur question
i guess the colder the better
 01/04/2005 12:59 AM
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IntelOwnsALL
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actually i think there is apoint where if a proc goes below a certain temp its not garenteed to work anymore...read that in max pc or something

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 01/04/2005 01:01 AM
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Mime
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QUOTE (Bit Slicer @ Jan 3 2005, 09:52 PM) I'm wondering if there's a breakpoint temp on athlons. The point that getting any colder wont help oc etc?
The point where getting it colder won't help OCing, is whatever temperature at which the machine is stable.

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 01/04/2005 01:02 AM
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Bit Slicer
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I'm not thinking of going cryo but maybe play aroung with freon or anhydrous ammonia. Both can suck down a lot of therms. But dont want to drop down to far.
 01/04/2005 01:02 AM
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amdrulesanduknowit
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absolute zero when the matter stops moving which means the electrons stop moving which is the current which is the pc works so if it is froze then it cant move
 01/04/2005 01:05 AM
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Mime
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It would also be impossible to get the processor that cold, but let's please not to turn this into another freakshow pseudo-science thread, mmmkay?

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 01/04/2005 01:06 AM
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Bit Slicer
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[QUOTE]absolute zero when the matter stops moving which means the electrons stop moving which is the current which is the pc works so if it is froze then it cant move

But then you would have a bunch of lazyel ectrons... might have to heat them up to gettim jittering

Seriously, it seems that there's a limit in coling with current options. Maybe theres another path??
 01/04/2005 01:08 AM
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amdrulesanduknowit
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whats the stable temp for your pc right now i would keep it at that or cooler like below 20c under load if u can
 01/04/2005 01:16 AM
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10stagepipelineX10pipelines
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Well in electronics transistors and other semiconductors are rated for operation at max cold temperature and max hot temperature. This is a very interesting question though. I think the main engineers that built the AMD processors may be able to shed some light on their CPU's Maximum cold temperature that it can properly operate at.

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 01/04/2005 01:32 AM
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Ivan Andreevich
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At infinitely close to absolute zero, you can keep feeding the CPU however voltage you want and there will be no problems - overclocks will increase.

There is no breakpoint - the colder the better. -30 Phase-Change helps. -80 3-stage cascades help. -196 boiling LN helps.
 01/04/2005 01:53 AM
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SLaY3r
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Yeah and AFAIK the colder the CPU the better it preforms...

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 01/04/2005 02:08 AM
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Rico
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QUOTE (Mime @ Jan 3 2005, 10:05 PM) It would also be impossible to get the processor that cold, but let's please not to turn this into another freakshow pseudo-science thread, mmmkay?
How do we know that it's impossible to reach absolute zero?

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 01/04/2005 02:51 AM
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Mime
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QUOTE (Rico @ Jan 3 2005, 11:08 PM)How do we know that it's impossible to reach absolute zero?

It's one of those limits that nature imposes, somewhat similar to the speed of light. In order to make something travel at the speed of light you'd need to provide it with an infinite amount of energy(if that doesn't make sense, trust me, it's been proven). Obviously that's not possible. In the absence of a perfect insulator, the only way you could reach absolute zero is by removing all heat from a closed environment. The more heat that is removed, the harder it becomes to remove the heat that's left over. Sooner or later you'd end up in the same situation of requiring an infinite amount of energy to do an infinite amount of work. It's possible to get close, but you'll never actually get there.

Before someone picks outer space as a perfect insulator, think of electronics on spacecraft. If space was a perfect insulator, it wouldn't be possible to use electronics in space since they'd all burn up and die(for a shameless plug I could mention the short blurb I did on that as an application of heat pipes at AMDEdge, but I don't think I'll go quite that far. )

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 01/04/2005 03:15 AM
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mtrupi
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QUOTE (10stagepipelineX10pipelines @ Jan 3 2005, 10:16 PM) Well in electronics transistors and other semiconductors are rated for operation at max cold temperature and max hot temperature. This is a very interesting question though. I think the main engineers that built the AMD processors may be able to shed some light on their CPU's Maximum cold temperature that it can properly operate at.
It is possible that there is a cold temperature condition where relative timing requirements are not met. However there is also a reliabilty factor. IC packaging is made up of many different materials with different expansion coeffecients. The mechanical stress can cause early failures. Definitely stay above the spec'd min storage temp, but if you are going to extremes be prepared to break something.
 01/04/2005 03:16 AM
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Rico
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QUOTE (Mime @ Jan 3 2005, 11:51 PM)
It's one of those limits that nature imposes, somewhat similar to the speed of light. In order to make something travel at the speed of light you'd need to provide it with an infinite amount of energy(if that doesn't make sense, trust me, it's been proven). Obviously that's not possible. In the absence of a perfect insulator, the only way you could reach absolute zero is by removing all heat from a closed environment. The more heat that is removed, the harder it becomes to remove the heat that's left over. Sooner or later you'd end up in the same situation of requiring an infinite amount of energy to do an infinite amount of work. It's possible to get close, but you'll never actually get there.

Before someone picks outer space as a perfect insulator, think of electronics on spacecraft. If space was a perfect insulator, it wouldn't be possible to use electronics in space since they'd all burn up and die(for a shameless plug I could mention the short blurb I did on that as an application of heat pipes at AMDEdge, but I don't think I'll go quite that far. )
neat. I think they won't be able to measure it, since, the electrons in the thermomitor would stop moving with near thousands to Absolute Zero, and the thermomitor would 'freeze' (no pun intended) up and not be able to read it. Thats my theory. ©

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 01/04/2005 03:46 AM
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koolaidwa
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mime is right, absolute zero is not reachable, will it ever one day, maybe, they working on that right now

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 01/04/2005 05:11 AM
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MrWicked1968
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QUOTE anhydrous ammonia

is very dangerous to work with in an uncontrolled environment. inhalation can/will cause severe lung damage. you are of course, free to play with your life as you want, but if you want to experiment with sub zero cooling, stick with things that just freeze your fingers into icicles, not condemn you to life hooked to an oxygen bottle...


there, I'll step down from my soapbox, but kids, trust me on this one...anhydrous ammonia is DANGEROUS

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