With the firmware update of Samsung ssd, os 10.13.3 and some other news it would be great an update of post #767
: Merci pour ton effort de synthèse, très apprécié. I have see you produced ssd comparison table with problems and other informations. Could you please post some updates? Thanks.
(For me interesting is space and speed and I'm looking for 960 pro 2TB blades or equivalent (for rMBP mid 2015) but because these are not cheep I wait until it will be no more problems.)
Have a nice day
sorry I've been quite busy late days...
I've updated my 2TB Samsung 960 Pro to firmware 4B6QCXP7, and I'm now using it under 10.3.3 and APFS without any issue from 1 week now, on a quite intensive daily use.
So I've updated my comparison table... hope it will be helpfull, if anyone have any observation or correction please feel free, it takes a really long time to test everything.
Especially I can't really estimate the battery drain on sleep with 2013-2014 macs : I miss time to measure it precisely.
Also on a side note, I finally got an answer from sintech that tell me :"if you want green version, you must leave message for it"... and they allow me to return the black adapters !
This make me very happy
Hi to all,
final results of my work:
Some extended time when booting after booting from external SSD. When restarting without shutdown sometimes a folder icon with a question mark shows instead of the bootscreen. Runs well after shutdown/ restart, though.
Thanks for your report ! You can resolve the issue with rebooting (folder icon with question mark) by asking Sintech for a green adapter.
How can one get an ISO 4B6QCXP7? I have a mac, so magician is not an option. Thanks.
There is no ISO yet available...
The only upgrade path as of today is to install Windows, and run Samsung Magician 5.2.
I have to tell a strange behaviour here :
- with the black Sintech adapter, Bootcamp with Windows 10 on the 960 Pro worked perfectly...
- with the green Sintech adapter Windows 10 failed with a BSOD
I hadn't installed Samsung NVMe driver in those tests, also, the Samsung drive had buggy firmware 3B6QCXP7 during the tests.
As soon I got Windows to boot reliably with the black adapter I did upgrade firmware and went back on macOS...
Based on Gilles' assessment, I am now inclined to purchase the 960 EVO for my early 2015 rMBP 13".
However, there are still some issues I don't understand properly, I'd be grateful if someone more knowledgeable could help sort them out:
1) In order to avoid KPs/Sleep issues with the Samsung SSDs, is it really necessary to update the firmware? ( I suppose it's a good idea to do this anyway, perhaps?)
In my experience :
- no sleep issue with 2015 macs. There is only a sleep issue with 2013-2014 macs and ANY NVMe drive, even Apple genuine NVMe SM2048L.. And this is solved by setting standby mode to 0 : "sudo pmset -g standby 0"
- kernel panic no more occur under 10.3.3 AND APFS boot drive...
2) Is tweaking hibernation / sleep settings now unnecessary on 10.13.3 using APFS (+green Sintech and tape), as per Gilles' recommendations? Is not, is there any consensus on the best settings? I found at least three or four different suggestions in the forum.
Not necessary at all on your early 2015 rMBP. Just verify you have the right BootRom (if you already installed 10.13 once it is) and go for a regular installation 10.13.3. Don't forget kapton tape on the adapter if there is not
3) Does the upgrade to 10.13.3 now allow the Samsungs to be formatted in 4k blocks, or still only 512b?
It doesn't change anything here... Samsung drives are limited to 512b, and, so, won't work with Sierra.
4) If the latter, does this actually make any difference wrt speed and/or durability, especially in my case where I will be limited by the PCIe 2.0 interface anyway?
No noticeable difference. Only issue with 512b blocs is that you can't run OS older than High Sierra.
5) Incidentally, what is it with these block size issues? I thought 512b blocks had started to be phased out from modern hard drives around 2010-2011 ! Why is it that these Samsungs, and other SSDs, have (or maybe had?) this limitation, and why are the smaller block sizes only available in the more modern High Sierra?
It's only a limitation of the Apple NVMe driver.
Starting from macOS 10.10.2, Apple did integrated a NVMe driver for the NVMe SSD of the macBook Retina 12" (early 2015). This NVMe driver was not aimed at supporting tiers NVMe SSDs and didn't support 512b blocs SSD.
Neither did the 10.11 and 10.12 NVMe drivers.
In the Hackintosh world, some patches were made so that 10.11 and 10.12 could run on 512b blocs SSD though.
The 10.12 NVMe driver natively works with any 4K non-Apple SSD (e.g Thoshiba XG3-XG4, Kingston KC1000, WD Black...).
And finally, the 10.13 NVMe driver natively works with literally any NVMe SSD.