Author: Anthony Cozzie
Date: 06:22:21 08/12/04
Go up one level in this thread
On August 12, 2004 at 08:59:19, Volker Böhm wrote: >On August 12, 2004 at 03:18:05, krisnatoon wrote: > >>On August 12, 2004 at 03:08:49, Jouni Uski wrote: >> >>>If it is Pentium M = Centrino, then everything is OK... >>> >>>Jouni >> >>Yes, this is a Centrino. >> >>Why is then everything OK? > >Everybody starts to by a PC according "clock" speed. A 1GHz PC is half as fast >as a 2GZ PC. Intel´s idea was to develop a processor that supports maximal clock >speed no matter how fast it would be. The Pentium IV was born. A Pentium IV with >about 1,8 GHz is about as fast as a Pentium III with 1,3 GHz. > >Because most PC user can not distinguish betwenn different "GHz" AMD had to >develop a marketing-trick and invented "quanti-speed" values (they used those >before). AMD argues that a CPU with x real GHZ has a quanti-speed of x*Factor >(ca. 1,3) GHz. Thus AMD has a GHz value that comes close to the Intel P4 GHz >value for CPU with the same speed. > >Intel marketing now startet a counter attack to AMD´s quanti-speed arguing that >only the PV has "real" GHz and not a somehow calculated value. > >One drawback of high clock speeds is the power consumtion. No matter what tricks >Intel is trying the "clock-speed maximized" achitecture of a PVI has much less >computer-speed/power-consumtion ratio compared to the Pentium III. In desktop >most consumer are ignoring high electicity costs and large and loud fan´s they >only have because Intel wanted a high clock rate as selling argument. (Did you >notice that I hate Intel for that? They are currently inventing a new type of >dektop case that is incompatible to older cases just to support even higher >power consumtion and better air-flow) > >On notbooks high power consumtion reduces time the notebook can work unplugged. >The additional heat needs very fast (because small) and loud fan´s. The notebook >gets very hot reducing its life-time and the ability to put it on your knees >without protection from massiv heat. > >Now Intel had a problem. They have the better as PIV Processor: The PIII >Processor that can easily compare to PIV and Athlon in speed with reduced heat >that could be sold in notebooks. >They solved it with the "Centrino" brand. "Centrino" is a brand describing a >concept where nearly every notebook component is from intel. It is based on the >Pentium M CPU (it is a mobile improved Pentium III). Intel does no longer sell >notebooks by clock speed but by the total mobility concept (w-lan, long duration >unplugged, ...). They could´nt use a kind of "quanti-speed" value because their >own marketing just told that AMD does this and it´s bad. > >I dream of a Pentium M desktop! > >One thing I have to admit. There are some applications where PIV processors >profits from it´s high clock speed. > >Greetings Volker we need to write a faq for this board: Pipelines, caches and branch prediction: why pentium 4 sucks for computer chess. anthony
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