Date: Wed, 28 Sep 2016 01:10:39 -0700 From: Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com> To: Ralf Mardorf <ralf.mardorf@rocketmail.com> Cc: FreeBSD Questions Mailing List <freebsd-questions@freebsd.org> Subject: Re: i386 version in future ? Message-ID: <CAOgwaMsc70GLPtT2VB1fiy50kzS6wFVOpPX=bY6xF1ov%2BSDT5g@mail.gmail.com> In-Reply-To: <20160928092435.40d1da6f@moonstudio> References: <CANrxokEkYLY7uTv%2BnWy4K_iBeeaaCMraJmrNOD7cU2GXCWkNCA@mail.gmail.com> <0D6BF663-5C95-4625-B412-00E14EF97986@FreeBSD.org> <35.AF.06698.BEF4AE75@dnvrco-oedge03> <20160927134158.74c11036@archlinux.localdomain> <CAOgwaMuMfF7_zve%2BAMuJ8iiAD4wMXGUQDO4-j8Ck1B1FZ=NOXA@mail.gmail.com> <20160928091109.7aa95c9d@moonstudio> <20160928092435.40d1da6f@moonstudio>
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On Wed, Sep 28, 2016 at 12:24 AM, Ralf Mardorf via freebsd-questions < freebsd-questions@freebsd.org> wrote: > On Wed, 28 Sep 2016 09:11:09 +0200, Ralf Mardorf wrote: > >On Tue, 27 Sep 2016 08:33:34 -0700, Mehmet Erol Sanliturk wrote: > >>- 64 bit CPU will consume more power than only 32 bit CPU . > > > >Hi, > > > >I seriously doubt that this is true. More likely a dual-core 64 bit > >does consume around half of what a 32 bit single core consumes. This at > >least is true for my old 32 bit Athlon and my currently used 64 bit > >dual core Athlon. Those 64 bit CPUs don't get nearly as hot as the old > >32 bit CPUs do. That the newer 64 bit CPUs provide frequency scaling > >OTOH doesn't make such a big difference regarding power consumption. > > > >Regards, > >Ralf > > Correction, regarding a list with Athlon CPUs the old 32 bit CPU seems > only to consume a few Watt more, than the new 64 bit dual-core. IOW the > power consumption more or less is equal, OTOH the 32-bit CPU needs much > more time to do the same, the newer 64 bit CPU could do. > _______________________________________________ > > Assume that 64 bit CPU performs only 64 bit requiring tasks , and assume that 32 bit CPU performs only 32 bit requiring tasks . My comparison is based on this assumption . There are a huge number of jobs that they only require 32 bit operations . For such jobs , it is not necessary to use 64 bit processors when there is a need to a large number of processors for such tasks collection . For a few jobs , these may not be important , but in a factory using processors in large numbers , total of such small number of watts may escalate to a large amount . This means unnecessary cost when a year of operation is considered . Thank you very much . Mehmet Erol Sanliturk
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