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To: Ali Chen who wrote (51734)	8/20/2001 1:14:32 PM
From: wanna_bmw	Read Replies (4) \| Respond to of 275872

Albert, Re: "Intel P4 at 1400MHz uses 42.2A, see p.19 ftp://download.intel.com/design/chipsets/designex/29824503.pdf" The link you gave must not have gone to the right place. Instead I found a guide to the i850 platform. But no matter, because I think you are confusing the measurement for power dissipation. Current varies during processor use, so P=IV is not a valid equation. Instead, thermal designers use P=CV^2f, where C = Capacitance, V = voltage, and f = frequency. In this case, just because the Pentium 4 can draw more power, it doesn't mean that it does so regularly. Look at the TDP values, and you'll see that the Pentium 4 dissipates much less than the Athlon at the same frequency. Your comment on duty cycles does not apply when siting an actual design specification. wanna_bmw