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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 203.14

-0.8%

Jan 9 9:30 AM EST

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To: andreas_wonisch who wrote (49368)	7/30/2001 2:37:32 PM
From: ptanner	Read Replies (1) of 275872

Andreas, Re: P3-M Power Consumption Thanks for the nice summary and it is nice (technology wise) that the processor now auto-switches between the two power levels (presumably while in battery mode). The low-power setting is more than a 50% drop with a clock rate about a third lower (and lower voltage/current). And the normal power setting provides from 45-75% more MHz per watt than the old mobile coppermines: coppermine MHz/W declines slightly with higher MHz (31 to 29 MHz/W) while the P3-M increases considerably (44 to 52 MHz/W). It would be interesting to see how these values compare with AMD's current mobile offerings. I looked to see if I had any corresponding information for the mobile Duron and Athlons but to no avail. There is nothing on AMD's site but there has probably been some educated conjecture here or on a quality web site. It would also be interesting to know the power requirement of the other significant notebook components. From a Micron .pdf encouraging more memory installation (updated 02/00) the typical power values were: Screen 6W HDD Active 4W HDD Idle 0.1W SDRAM (32MB) 0.12W SDRAM (64MB) 0.13W I downloaded from Crucial months ago so no link but will e-mail if requested by PM or here is a link to most of the information in HTML: crucial.com This source is old and screens have gotten larger and memory requirements increased. Still, it highlights the limited gains from CPU power levels below 2W and that while DDR might be lower power, it might not make any difference. -PT

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