USB 3.0 not transferring fast enough

Ahmedss79 said:

I have a 2TB WD my book.
When transfer file from/ to the drive I only get 25 to 45 mb\s
The motherboard is gigabyte Z68 Series with latest bios
And the same goes for drives firmware
Any help please.

I suspect the WD slows it down quite a bit. I have SIIG USB 3.0 PCIexpress card in both my Phenom with 8 GB ram running Vista64 and my AMD dual core with 2 GB ram running 32 bit W7. I use SIIG USB 3.0 docking stations with WD caviar black 6 Gb/s 64 MB cache 1 TB drives.

On the Vista64 machine I'm getting sequential read/write pretty close to the sustained transfer speed of the drive. Reads are typically 130+ MB/s (Crystal Disk Mark calls 1 million bytes per second 1 MB/s so that would jibe with sustained transfer rating of the drive of about 126 MB/s on WD stat sheet.) On the dual core I only get sequential reads/writes in the 65 to 75 MB/s range.

I suspect you could do better with USB 3.0 dock using an internal WD drive. Trouble is it's hard to "test drive" this stuff. One virtue of USB 3.0 via express card and docks is you can always move them to a faster machine later on.

It would seem that there are a lot of different speeds depending on hardware. My USB performance seems to tie in with MilesAhead and I also use a docking station.


WDC WD3200BEVT-22A23TO (320GB) 2.5 - inch 5400rpm USB3





Samsung HD103SJ (1000GB) 7200rpm USB3





Just as a comparison I have benched another SamsungHD103SJ (1000GB) 7200rpm running as an internal drive





I find the results interesting, depending on which benchmark you take my internal drive only just manages to out perform the USB3 drive .......... or does it??

Yes Pooch you are right. I think it also depends on what drive you are testing. Some are much faster than others.