I have an Express 4M2, 2 WD SN570 2TB, Mac Mini 2018 with Performance Issues.

[jll0814]

I have an Express 4M2, 2 WD SN570 2TB, Mac Mini 2018 with Performance Issues. When I run a speed test I'm seeing about 600 meg. The drive is rated for 3,500MB/s. Any Ideas why I'm only getting 600 Meg Performance?

 

[mcnallym]

Is issue with 2tb ssd specifically in some families with how mac os see’s them.
I have a pair of 2tb and 1tb with the 1tb performance and 2tb slow.
I did find something back in May that explained in detail but cannot find it now.

 

[paedocypris]

I've the same nvme (1TB), getting the same speed (at 600MB/s)

 

[AppliedMicro]

Any Ideas why I'm only getting 600 Meg Performance?

👉 https://forums.macrumors.com/threads/fast-external-storage-owc-express-4m2.2282921/?post=29565863#post-29565863