Startek USB 3.0 card not running at 3.0 speeds

Mainer82

Binary
Joined
5 Jan 2004
Messages
101
Hi,

I have purchase the STARTECH PEXUSB3S2 PCI Express card for my new system (i5) I built last year. I also purchased a Western Digital MyBook 3.0 external hard drive. It is USB 3.0 capable and comes with the 3.0 cable.

I have install the latest drivers for the STARTECH PEXUSB3S2 and also flashed the external drive with the latest firmware. I am running Windows 7 x64 as well.

Max transfer rate is 25MB/s. I am mostly transferring photos & documents.

Any suggestions?
 

Johnny

.. Commodore ..
Political Access
Joined
12 Jan 2004
Messages
5,015
Is the mobo usb 3 compatible? What Mobo is it? Also, how big are the files you are trying to transfer? There are times that a large file will take a little bit because of the buffering an such ..
 

Xie

- geek -
Joined
29 Sep 2003
Messages
5,275
Your never going to get full USB 3.x speeds with an external, but then again your not going to get them with an internal either. USB 3.0 max speed 4.8 Gbit/s = 600mb per sec ... I doubt you have a drive that can read/write that fast. They don't advertise that part when they pitch all this new hardware, your only going to get as fast as your drive and then lose some when you go external.
 

Mainer82

Binary
Joined
5 Jan 2004
Messages
101
Hi,

I realize I won't get the full advertised speed but I should get more than 25MB/s. The motherboard is Intel DP55WG but I am using the listed USB 3.0 card.

The external hard drive is designed for USB 3.0 as well.
 

Mainer82

Binary
Joined
5 Jan 2004
Messages
101
In my first post I stated that I purchase a USB 3.0 card (STARTECH PEXUSB3S2 PCI Express card).
 

Johnny

.. Commodore ..
Political Access
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12 Jan 2004
Messages
5,015
In my first post I stated that I purchase a USB 3.0 card (STARTECH PEXUSB3S2 PCI Express card).

[edit] I read this wrong. Sorry for the confusion [/edit]

I think the best advice would be to call the support for the company you bought the card from. About the only thing I can think of is that it isn't reading it isn't possibly reading it as a usb 3.0 ...
 
Last edited:

Mainer82

Binary
Joined
5 Jan 2004
Messages
101
Between my SATA II internal HDD to the external USB 3.0 HDD. I did xfer a 3.2GB VDI file and the rates jumped to about 48MB/s.
 

dreamliner77

The Analog Kid
Joined
16 Mar 2002
Messages
4,719
Just a thought but the low speed may be due to multiple small files. Also, have you defragged the source drive?
 

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