External hard drives still running slow on Mm M1?

Hi.

I had the problem with a Samsung 970 NVME in external case with Jmicron controller in Big Sur. R/W where around 3/400 MB/sec. Now, with Monterey, works correctly: 6/800 MB/sec. Plese note that while the SSD is a nominal 2.800 MB/sec read, there is a limit of 1GB/sec in the external box. Therefore 800MB/sec in read is normal.

External drive read/write speeds depend on the type of external drive and connection.

Please share,

what external drive(s) you currently you have?

what external drive(s) you are looking at buying?

how are you planning to use those external drive(s)?

Plus you do not need an ultra fast drive for Time Machine or making Clone backups.

For Time Machine and Clones you want reliability like,

the > https://eshop.macsales.com/shop/owc-mercury-elite-pro-mini/usb-c-esata

or the > https://eshop.macsales.com/shop/external-drives/owc-ministack

If you want something faster, check out

the > https://eshop.macsales.com/shop/external-storage#drive-configuration:single-bay,interface-ports:usb-3-1-gen-2-usb-c

the Lacie that Apple sells

at > https://www.apple.com/shop/product/HPQ42ZM/A/lacie-1tb-mobile-ssd-secure-usb-c-drive?

or perhaps a Samsung T7

> https://www.samsung.com/us/computing/memory-storage/portable-solid-state-drives/portable-ssd-t7-touch-usb-3-2-2tb-black-mu-pc2t0k-ww/

You’re welcome.

I have purchased RAM for different Mac’s and External Drives from OWC for many years. Plus if you graze around these forums, you will find them highly recommended by many of the upper level users.