Author: Uri Blass
Date: 11:00:03 02/07/02
Go up one level in this thread
On February 07, 2002 at 13:06:49, Christophe Theron wrote: >On February 07, 2002 at 02:04:05, Pham Minh Tri wrote: > >>On February 06, 2002 at 16:43:09, Dann Corbit wrote: >> >>>On February 06, 2002 at 14:13:03, Roy Eassa wrote: >>> >>>>http://www.palminfocenter.com/view_Story.asp?ID=2965 >>>> >>>>"... code that has been recompiled for ARM-based chips is 61 times faster on a >>>>200MHz ARM processor compared to a 33MHz Dragonball one." >>>> >>>>Is that a typo? Did he mean 6 times? >>>> >>>>If it's not a typo, how would a factor of 61 (article actually implies factor of >>>>62 by saying "faster than" rather than "as fast as") affect the rating of such >>>>apps as Chess Tiger for Palm and ChessGenius for Palm? >>> >>>A fairly conservative estimate is 50 ELO increase for each doubling in speed. >>>With 5.93 doublings, we would have +296.5 ELO increase. >> >>Hi Dann, >> >>200MHz = 33MHz x 2^n --> n < 2.5 --> we would have max +125 Elo increase ;) > > > >You are making a huge mistake. > >You can't compare the speed in MHz of two processors and conclude about their >relative computing speed. > >The DragonBall used in the current Palms needs more than 10 cycles average to >execute one instruction. Its a very old architecture (Motorola 68000). > >The ARM that is going to be used in the PalmOS 5 handhelds needs about one cycle >per instruction. > >PLEASE: forget about comparing Mhz. > > > > Christophe There is a smiley after the claim so it seems that the poster knows that dividing Mhz is not correct way to compare speed. There is another mistake(I ignored all the part with the smiley so I ignored it in my previous post but the mistake is similiar to the previous mistake that I found) If 200=33*2^n you get n>2.5 and not n<2.5 It seems that Pham Minh Tri solved the equation 200=33*n^2 and not 200=33*2^n Uri
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