2018 MacBook Pro Has Fastest SSD Ever

Post by nodesocket » Fri, Jul 13, 2018, 9:26 PM UTC

xt00 wrote: 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…

Post by notadoc » Fri, Jul 13, 2018, 9:33 PM UTC

nodesocket wrote: post #8

notadoc wrote: post #6

Great. When can we get a pro MacBook Pro without the non-pro Touch Bar and with a pro reliable keyboard?

Agree, not useful. I have a 2017 with Touch Bar, and don't think I have used it more than a few times and that was just tinkering and boredom.

Post by jjeaff » Fri, Jul 13, 2018, 9:37 PM UTC

TheKnack wrote: post #10

phren0logy wrote: post #7

Earlier quoted context omitted.

Really? Faster than 2,519MB/s? I thought they were achieving this by ganging together 2 drives via their proprietary T2 chip.

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.

Post by dogma1138 » Fri, Jul 13, 2018, 9:39 PM UTC

jjeaff wrote: post #24

dogma1138 wrote: post #9

Earlier quoted context omitted.

No you don’t, that speed is for an OS level copy not the advertised max seq write speed. I have the 960 pro in raid and I don’t get more than 2000-2200 MB/s when copying a files of that size on an actual file system. Based on the copy speed vs advertised speed I would put the max seq write speed of that drive at least in the 3000 MB/s range this is at least as fast as the 970 evo in its largest capacity if not faster…

You can't infer anything from the copy speed. The article mentions that it is using the new apple file system apfs. Which includes a clone feature that upon copying a file, a reference to that file is created. The file system then only actually stores changes made to individual copies. So I'm surprised it actually took 2 seconds.

Post by satysin » Fri, Jul 13, 2018, 9:54 PM UTC

dogma1138 wrote: post #28

satysin wrote: post #20

Earlier quoted context omitted.

My XPS 15 shipped with a PM981 (1TB) and while it is fast it isn't as fast as the speeds in the article. However I think this is more down to Apple "cheating" at the file system level with delayed write and snapshots or whatever other tricks they are using. Also the PM981 is the same tech as used in the 970 EVO. Samsung have also had the SM line previous which was the same tech as used in the PRO line but there doesn…

It’s not the PM981 but it quite possibly be a newer version of it, the WD Black reaches speeds of 2800 MB/s in its 1TB version so it’s not unreasonable that a Sammy refresh of the 981/970 will be at least as fast as the newer WDs. And while Apple can cheat at least on the mid 2015 15” MBP with a 1TB NVME I’m not getting any speeds that aren’t in line with my drive this is on a Mojave preview with APFS.