Which USB 3.0 Hard Drives?

[robvas]

I bought a Hitachi Touro 1TB 2.5" USB 3.0 drive. Plugged it in and only got about 38MBs from it. Sure enough, it showed up as 480Mbs in system profiler! I plugged it into the left-hand USB port on my 13" rMBP and it showed up as 5Gbs and I got 90MB/s out of it.

Apple's site shows both ports as being USB 3.0, what gives?

 

[Roger73]

I did get 60Mbps read and write with a WD 1TB usb3 drive, and only 30Mbps with a usb2 WD 500Gb drive. I did this on the right hand side port.

My Samsung 840 256Gb SSD in a usb3 enclosure gets 200Mbps read and write.

The internal disk is around 430Mbps.

I'll check both sides out tonight and will let you know.

 

[Roger73]

ok, tested on both sides with my WD 500Gb usb2, WD 1TB usb3 and Samsung 840 250Gb SSD in an icy usb3 enclosure.

same speeds on both usb3 ports.