Path: csiph.com!news.swapon.de!eternal-september.org!feeder.eternal-september.org!reader02.eternal-september.org!kreme.dont-email.me!.POSTED!not-for-mail From: Lewis Newsgroups: comp.sys.mac.system Subject: Re: Apple Silicon M1 Chip in MacBook Air Outperforms High-End 16-Inch MacBook Pro and All iOS Devices Date: Sat, 21 Nov 2020 21:06:11 -0000 (UTC) Organization: Miskatonic U Lines: 51 Message-ID: References: Reply-To: g.kreme@gmail.don-t-email-me.com Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Date: Sat, 21 Nov 2020 21:06:11 -0000 (UTC) Injection-Info: kreme.dont-email.me; posting-host="b5a7d23a50aec55a6c7bbe1d37202e0d"; logging-data="30541"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19WIERRqc8vWurfKE9o/Rrj" User-Agent: slrn/1.0.3 (Darwin) Cancel-Lock: sha1:lTLW5ZNnGsoDG0LJZY8cmYONDWI= X-Face: )^b5"R:T7U>9~:PEn3YkzMfW*[b1qKeU.fP9C8~8HpU9}lA&6`bH1z Mail-Copies-To: nobody X-Clacks-Overhead: GNU Terry Pratchett Xref: csiph.com comp.sys.mac.system:135145 In message Alan Browne wrote: > On 2020-11-21 12:54, Lewis wrote: >> In message Alan Browne wrote: >>> On 2020-11-21 11:47, Lewis wrote: >>>> In message Alan Browne wrote: >> >>>>> Others (nospam, JR, Lewis) have posted many links to factual information >>>>> about M1 Macs beating many higher end intel Macs in performance (speed, >>>>> energy). That's really all you need to know. >>>> >>>> But he would need to 1) read 2) reread 3) reread 4) understand. >>>> >>>> And what are the odds of that? >> >>> Best? 3 out of 4. Obviously. >> >>>> >>>>> In effect when running Mac OS on Mx architectures it's not the same Mac >>>>> OS at the system level. And that really is the point: moving what used >>>>> to be complex OS ops out of the OS and into the chip allowing the CPU to >>>>> do higher level things much faster and by default the lower level things >>>>> blaze. >>>> >>>> The key thing that is most impressive about the M1 is that it can run >>>> translated Intel x64 code faster than Intel CPUs can. >> >>> That's a blackbox view so far. We don't know the cycle speed(s) so it's >>> hard to know what is actually what. >> >> We do know that Intel x64 apps are running faster on the M1 than on the >> remaining 13" Mac Book Pro. We also know that some of the APIs execute >> twice as fast in translation than on the Intel chips. I forget the exact >> call that Apple mentioned, but it was something like NSRelease which >> takes 30ns on intel, 8 on the M1, and 14ns on the M1 in Intel mode. >> >> Ah, yes, here it is: >> >> >> Fun fact: retaining and releasing an NSObject takes ~30 nanoseconds on >> current gen Intel, and ~6.5 nanoseconds on an M1 >> >> … and ~14 nanoseconds on an M1 emulating an Intel. > Good data points. Thx. Astounding. Did I ever tell you about > migrating from VAX to Alpha? You see, ... Keep it up and imma unplugging your Internet! -- THERE'S JUST ME, said Death. THE FINAL FRONTIER. --Moving Pictures