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Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 213.43+6.2%Dec 19 9:30 AM EST
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To: Paul Engel who wrote (27962)2/11/2001 2:37:09 AM
From: PetzRead Replies (2) of 275872
 
re:According to Intel's current RoadMap - Courtesy of Tom Uberclockermeister - the existing Pentium 4 will scale to 2 GHz BEFORE the 0.13 micron version is introduced (at a speed >2 GHz !)

I'll believe it when I see it. The current P4-1.5 has to dissipate 54.7 watts and keep the package temperature no higher than 72 degC. Extrapolating table 25 in the P4 spec sheet to 2 GHz gives a "thermal design power level" of 69.2 watts. That's not too hard to do if you have robust transistors that can operate at 95 degC like AMD. But the wimpy Intel transistors require the 72 degC package temperature. if we assume an office-environment case temperature of 40, the heat sink has to have an efficiency of 0.46 W/degC.

Even the Thermaltake P4 Volcano thermaltake.com can only do 0.48 degC/W.
Of course this calculation gets blown out the window if Intel has to jack up the supply voltage to overclock their chip to 2 GHz. Or if the customer runs some code Intel hasn't seen yet, because the Intel spec says this about their power specifications:

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. ® ®

Petz
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