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2018 MacBook Pro Has Fastest SSD Ever

laptopmag.com

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Re: 2018 MacBook Pro Has Fastest SSD Ever

#31
post #11

Also, apple is using the new file system that makes things like copying files more efficient (not sure how exactly), but sounds like the test is going to make the mac look awesome even though many people who pay extra for a 1 TB samsung EVO 960+ SSD are going to be matching apple's performance.. For example, my 2012 MBP uses a Samsung EVO 960 SSD and yes its super fast.. and I didn't have to pay $4000 for the compute…

A new 13" with 16 GB of memory, 256 GB SSD, and 2.3GHz quad‑core 8th‑generation i5 is $2,000. Half your quoted $4,000.

In my case an i5 with only 256GB SSD and 13" is not so great.. and I would prefer to replace my 15" MBP from 2012 with a 1TB SSD and 16GB ram and an i7 with also a 15" MBP with similar class stuff.. I guess maybe if I got used to using an external monitor always then the 13" would be nice, and I would just use an external mouse and keyboard -- but then its not clear why I'm buying the mac since the display and trackpad are typically some of the selling points. Keyboard used to be, but not so much anymore..

Re: 2018 MacBook Pro Has Fastest SSD Ever

#32
post #25

Earlier quoted context omitted.

They admit in the article that a lot of this performance could be an illusion caused by the APFS instant cloning feature, which essentially just creates a new directory listing pointing to the existing file when you copy a file to the same volume. A separate copy of the data is only made when you make a change to one of the files.

It also appears that it doesn't copy the whole file upon changing one of the files. It only stores the changed portion. I assume this is block level. Pretty cool. But yes, SSD speed has very little to do with copy speed in this case.

I wonder if this could be used to infer information that users may not intend. For example, perhaps copying a file and fraudulently altering something in it at a specific time could be used as evidence in a trial.
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