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To: TechieGuy-alt who wrote (20208)11/22/2000 12:56:04 PM
From: andreas_wonischRespond to of 275872
 
TG, Re: The 72 dec is the case temp- not quite the same as the die temp.

The maximum die temperature is 85°C, it's listed at the beginning of the document (maximum ratings).

BTW, the maximum power consumption of 54.7W might be very misleading, look at this this footnote:

"The numbers in this column reflect Intel's recommended design point and are not indicative of the maximum power the processor can dissipate under worst case conditions."

In other words: Petz 70W number might be closer to the truth...

Andreas



To: TechieGuy-alt who wrote (20208)11/22/2000 1:27:51 PM
From: PetzRead Replies (1) | Respond to of 275872
 
TG, <1.7v is the MAX Vcc>
Its obvious this is NOT because of thermal problems but because of punch-through problems.

4. The processor should not be subjected to any static Vcc and Icc combination wherein Vcc exceeds Vcc_mid +
0.055*(1 - Icc /Icc_max ) [V]. Moreover, Vcc should never exceed Vcc_max (VID). Failure to adhere to this
specification can shorten the processor lifetime.

In other words, there is no hope of raising the Vcc to extend the core frequency beyond 1.5 GHz, even with active cooling.

I also found the reason for the large disconnect between maximum DC input power (70 watts) and the "Thermal Design Power" spec of 54.7 watts. Catch this one:

2. The numbers in this column reflect Intel’s recommended design point and are not indicative of the maximum
power the processor can dissipate under worst case conditions. For more details refer to the Intelâ
Pentiumâ 4 Processor Thermal Design Guidelines.

In other words, DON'T DESIGN FOR THE WORST CASE! TRUST US.

With Intel-approved software, I'm sure there will be no problem.

EDIT - Andreas, sorry you already picked this up!

Petz



To: TechieGuy-alt who wrote (20208)11/23/2000 1:54:22 AM
From: fyodor_Respond to of 275872
 
<TG: Additionally I don't know why the Intelbees are so happy with 2GHz in Q3 next year. (...) That means that they are setting up for a tougher challenge for the 2nd part of the 18 months in which they have to double performance.>

Seeing as the .13mu shrink is featured in the 2nd part of the 18 month period, I don't see the problem.

-fyo


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