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Technology Stocks : Intel Corporation (INTC) -- Ignore unavailable to you. Want to Upgrade?

To: Elmer who wrote (135513)	5/19/2001 12:36:46 PM
From: pgerassi	Respond to of 186894

Dear Elmer: You forgot the two most important things to come out of that spec: 1) The TCC must be enabled to keep the processor with specifications. That means there are conditions whereby a CPU with cooling even to the maximum where the processor will still operate out of spec. Furthermore, any time the processor operates with it off even with maximum cooling, the results may be in error (this is the real problem). If you run with it off, it will give bad results sooner or later (most software does not check this type of condition). 2) The processor must be not subjected to any static Icc and Vcc condition where Vcc > Vccmid + 0.055(1 - Icc/Iccmax). That means that processor voltage must be reduced when operating current (read frequency and processor load) goes up. So it can operate only at Vccmid + 0.055 at Icc of zero. Well P4-1.7 at 1.75V has a Vccmid of 1.665 and thus, Vcc cannot go above 1.730V for any length of time. Thus spec on chart just above is wrong with note 4 below on page 19 of the specs. These two points just goes to show that as the frequency is ramped higher P4 must run in more perfect conditions. It is one of the least tolerant CPUs to come out of Intel in a long time (except for the P3-1.13G). Point 2 shows a design that needs -3%+0% tolerance in routines running at max power. Furthermore, if trottling is not enabled will yield incorrect results period (Section 7.3)! Not a good thing overall! Pete