Path: csiph.com!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,comp.sys.mac.portables,comp.sys.mac.hardware.misc Subject: Re: Who is going to buy the first Arm (M1) MacBooks? Date: Sat, 14 Nov 2020 00:54:10 -0000 (UTC) Organization: Miskatonic U Lines: 52 Message-ID: References: <121120201421024996%nospam@nospam.invalid> <0VyrH.145047$Ml5.103301@fx24.iad> Reply-To: g.kreme@gmail.don-t-email-me.com Injection-Date: Sat, 14 Nov 2020 00:54:10 -0000 (UTC) Injection-Info: kreme.dont-email.me; posting-host="3adbca80f172146e5ddf22ea3072edc8"; logging-data="31745"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18Sn29hXiWyBna4Rd4pIryH" User-Agent: slrn/1.0.3 (Darwin) Cancel-Lock: sha1:yI6nBQfTu8j+UqfSn79PfjFhTtg= X-Face: )^b5"R:T7U>9~:PEn3YkzMfW*[b1qKeU.fP9C8~8HpU9}lA&6`bH1z X-Clacks-Overhead: GNU Terry Pratchett Mail-Copies-To: nobody Xref: csiph.com comp.sys.mac.system:134846 comp.sys.mac.portables:1387 comp.sys.mac.hardware.misc:2157 In message Alan Browne wrote: > On 2020-11-13 15:20, Lewis wrote: >> In message <0VyrH.145047$Ml5.103301@fx24.iad> Alan Browne wrote: >>> On 2020-11-12 14:21, nospam wrote: >>>> In article , JF Mezei >>>> wrote: >>>> >>>>> Asll we know is "unified memory" which is meaningless marketing mumble >>>>> jumble. >>>> >>>> nonsense. >> >>> It is marketing speak to a degree. Per a Wikipedia article[1] the SOC >>> uses 3733 MHz LPDDR4X spec'd SDRAM as an included component within the >>> SOC. Still needs a memory manager though that may be more deeply >>> integrated in the CPU; likely has DMA of some kind, esp. for the GPU, >>> but other I/O as well. >> >>> [1] that source has no reference so I declare escape clause. But it's a >>> good bet if someone has seen that in System Info declared as such on the >>> many, many developer systems out there. >> >> What many many developer systems out there? > Thousands... Nonsense. >> (The DTK is not an M1 machine). > I assumed it was. You assumed wrong. As was detailed at the time it is a A12X. Literally an iPad chip. It does not have unified memory. It does not have USB-4/TB. It is not the same chip *at all* > Nevertheless, the use of the memory model cited above is quite > possible and that that part of the fab is supplied by the chip maker > whether on the same wafer or other. The chip maker supplies exactly what Apple designed, nothing more, nothing less. > And/or that someone made the same assumption that I did about the memory > found on the dev kit. And that person was equally wrong. -- Lead me not into temptation, I can find the way.