Hello,
I have a 16'' M1 Macbook Pro connected to my Studio Display. I bought a brand new Crucial X9Pro SSD with 2TB. The SSD came extFat formatted and I connected it to my Studio Display via USB-C to test transfer speed with Black Magic Disk Speed Test.
I got around 900 MB/s. Then after I formatted the drive with APFS encrypted transfer speed dropped significantly:
APFS encrypted on Studio Display, Test size 1TB:
APFS encrypted on Studio Display, Test size 2TB:
First I thought, that was due to encryption, but plugged directly into the Macbook Pro I got:
APFS encrypted on 16'' M1 Macbook Pro, Test size 1TB:
I became curious and reformatted the drive with APFS (not encrypted) and tested again:
APFS without encryption on 16'' M1 Macbook Pro, Test size 1TB:
APFS without encryption on Studio Display, Test size 1TB:
So I found, that the APFS formatted SSD has nearly the same speed when plugged directly into the Macbook Pro or into the Studio Display, roughly about 900 MB/s.
APFS encrypted the speed drops to 720MB/s write / 780 MB/s read when plugged into the Macbook. But when plugged into the connected Studio Display, speed drops down to 432 MB/s write / 530 MB/s read.
This is still a good result, but I wonder, why encryption has such an impact on the speed, if the SSD is plugged into the Studio Display, where transfer speeds are quite similar for unencrypted APFS.
I have similar speeds with encrypted APFS for a 1TB Samsung T7 and a 1TB Sundisk Extrem. ( I can not do unencrypted APFS benchmarks on those, since they are full with data, but I remember a similar drop in speed after formatting with encrypted APFS).
I've tested 2 different USB C cables (one that came with the drive and an other quality cable).
Any idea, what makes a SSD formatted with encrypted APFS so slow when it is connected to the Studio Display ?
Has anyone a higher transfer speed with encrypted APFS formatted SSD drives, that are connected to the StudioDisplay ?
I have a 16'' M1 Macbook Pro connected to my Studio Display. I bought a brand new Crucial X9Pro SSD with 2TB. The SSD came extFat formatted and I connected it to my Studio Display via USB-C to test transfer speed with Black Magic Disk Speed Test.
I got around 900 MB/s. Then after I formatted the drive with APFS encrypted transfer speed dropped significantly:
APFS encrypted on Studio Display, Test size 1TB:
APFS encrypted on Studio Display, Test size 2TB:
First I thought, that was due to encryption, but plugged directly into the Macbook Pro I got:
APFS encrypted on 16'' M1 Macbook Pro, Test size 1TB:
I became curious and reformatted the drive with APFS (not encrypted) and tested again:
APFS without encryption on 16'' M1 Macbook Pro, Test size 1TB:
APFS without encryption on Studio Display, Test size 1TB:
So I found, that the APFS formatted SSD has nearly the same speed when plugged directly into the Macbook Pro or into the Studio Display, roughly about 900 MB/s.
APFS encrypted the speed drops to 720MB/s write / 780 MB/s read when plugged into the Macbook. But when plugged into the connected Studio Display, speed drops down to 432 MB/s write / 530 MB/s read.
This is still a good result, but I wonder, why encryption has such an impact on the speed, if the SSD is plugged into the Studio Display, where transfer speeds are quite similar for unencrypted APFS.
I have similar speeds with encrypted APFS for a 1TB Samsung T7 and a 1TB Sundisk Extrem. ( I can not do unencrypted APFS benchmarks on those, since they are full with data, but I remember a similar drop in speed after formatting with encrypted APFS).
I've tested 2 different USB C cables (one that came with the drive and an other quality cable).
Any idea, what makes a SSD formatted with encrypted APFS so slow when it is connected to the Studio Display ?
Has anyone a higher transfer speed with encrypted APFS formatted SSD drives, that are connected to the StudioDisplay ?