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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums. |
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09-23-2004, 05:16 PM | #1 |
Thermophile
Join Date: Sep 2002
Location: Melbourne, Australia
Posts: 2,538
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Location of P4's thermal diode
Finally - I had seen this ages ago, but had forgotten where the document was.
Was reading through Roscal's micro-channel document and he had a link to it: http://developer.intel.com/update/de...ch/it04021.pdf The P4's thermal diode is located in the corner in the absolute coolest possible position of the CPU, hence effectively reducing much of the validity of using P4's for comparing waterblock performance, which is an experimental conclusion that I came to long ago. Would love to see where AMD have put their thermal diode, but given the really low temperatures that AthlonXP CPU's report when reading the thermal diode, I suspect that they too have done a similar thing. Man, I feel so happy to find that document again. Last edited by Cathar; 09-23-2004 at 05:55 PM. |
09-23-2004, 06:28 PM | #2 |
Big PlayerMaking Big Money
Join Date: Aug 2001
Location: irc.lostgeek.com #procooling.com
Posts: 4,782
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I have read that Intel has more than one thermal diode; an external one in the cool spot for monitoring temps with motherboard and a second diode in a hotter location used for the actual clock throttling. This second diode is not externally accessible (no pin). I don't recall the exact source of that info (Nevin or Bill?)
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