[W510] - USB 3.0 SSD, poor performance.

[Chatbox]

I'm getting some rather poor performance on both of the USB 3.0 ports on the laptop.

I have an SSD that's been tested via internal SATA II connection, capable of (sequential) read 275MB/s, and write 250MB/s. Also have a 3.5 inch WD Caviar Black 2TB SATAIII (WD2002FAEX), tested via eSATA, capable of (sequential) read 150MB/s, and write 150MB/s (think it saturated the eSATA on the W510).

However, when either of these two drives was connected via USB 3.0 (tested with three different brands of USB 3.0 enclosure), the sequential read performance was only at 85MB/s, and write was (REALLY bad) at 60MB/s (even with the SSD). This leads me to think there's a bottleneck somewhere on the W510 (because I know for certain, the USB 3.0 enclosures were able to at least give 130MB/s read and write. The drives are also capable of performing faster than 100MB/s as well).

All drivers, BIOS, firmware are the latest. Platform is Windows 7 Ultimate - 64bit.

Help please?

[Chatbox]

Or maybe I should also ask, is anyone else facing some kind of write performance bottleneck when writing to "any" (SSD / mechanical, single/RAID/JBOD ...etc) external USB 3.0 storage device?

[pkincy]

Frankly I have never tested it. I do have a Sata 3 enclosure for my backup HDD and my backups seem to move pretty quickly (much of the time while I am asleep) so haven't tried to benchmark it.

How would I go about checking that for you?

[Chatbox]

I used Crystal Disk Mark for benchmarking.

[wolfindersteppe]

Here some test with SSD with USB3, eSATA and eSATAp on W520:
http://forum.notebookreview.com/lenovo- ... ost7593804
http://forum.notebookreview.com/lenovo- ... ost7633027