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Politics : Formerly About Advanced Micro Devices
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To: Mani1 who wrote (98052)3/12/2000 2:26:00 PM
From: Charles R  Read Replies (1) of 1572503
 
Mani,

<According to here---http://developer.intel.com/design/pentiumiii/datashts/24445206.pdf ---
1 GHz has max junction temp is 60 degrees C !!!! This is amazing! A nice fella pointed this out to me by emailing me this post

aceshardware.com Very nice post and 100% accurate.

The fact of the matter is that 1GHz Coppermine has a much more aggressive thermal design requirement than the 1 GHz Athlon, not to mention much more expensive.>

Thanks for the informative post. 60 degrees junction temp! Will be interesting to see what Paul has got to say about this.

<The fact of the matter is that 1GHz Coppermine has a much more aggressive thermal design requirement than the 1 GHz Athlon, not to mention much more expensive.>

Can you quantify the "more expensive" part? Any estimates on the relative costs of cooling 1G Athlons and 1G PIIIs?

<1 GHz Coppermine needs the total thermal resistance from the die to air in the case, of less than 0.8 W/C! That is very low. It is only doable with high speed fans and finely bonded (not extruded which is much cheaper) aluminum sink and a thick copper spreader.>

This is a two sided story: On one side it shows Intel's desperation to give a perception that it can compete on Mhz basis, the other side is that Intel has the resources to pull all stops to do this kind of stuff.

Chuck
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