2017 15" MBP + Samsung EVO 860 = SLOW!

[hugoZA]

This surely can't be correct? Getting 36MB/S read on the drive connected using USB-C from a USB 3.1 Gen2 enclosure?

 

[Audit13]

Could be the bridging chip in the enclosure?

Are you able to test the drive in another enclosure or the drive inside another computer?

 

[Howard2k]

I get faster speeds over my wifi. Something is wrong there.

 

[iMacDragon]

That speed would indicate for some reason running at usb 2 speed? check what system report says for usb on it.

What usb c cable are you using? I believe some usb c cables will only do usb 2, including possibly the apple charging cable?

 

[Shamgar]

That speed would indicate for some reason running at usb 2 speed? check what system report says for usb on it.

What usb c cable are you using? I believe some usb c cables will only do usb 2, including possibly the apple charging cable?

This is correct. USB C cables vary greatly in specification. Some are USB 2 speed (480 Mb/s), some are 3.0 (5 Gb/s), and others are 3.1 (10 Gb/s). There's also a similarly wide spread in how much power they can carry. Apple's charging cables are rated for 480 Mb/s and 87 watts. To keep them thin while carrying higher current, they cut back on data speed.

 

[hugoZA]

Thanks for the feedback folks. I used 2 cables, the one that came with my mac and one that came in the box. I also tested with an old enclosure I had at home and the result was almost 10x faster. I suspect the enclosure I purchased is bad.

 

[iMacDragon]

Thanks for the feedback folks. I used 2 cables, the one that came with my mac and one that came in the box. I also tested with an old enclosure I had at home and the result was almost 10x faster. I suspect the enclosure I purchased is bad.

Or both cables are bad, the one that came with mac won't do more than USB 2 as already established. Tohugh if it came with a bad cable, then that's a fault in of itself.