Portable Hard Drive Speed Problem

August 27, 2011 at 09:08:55
Specs: Windows XP, Pentium D 2.4GHz
I recently purchased a 500 GB Buffalo HD-PCU2 : MiniStation. According to Buffalo, it's max. data transfer rate is 480 Mb/s. However, while copying files to or from the hard drive I only got about 27 Mb/s speed. I also checked the hard drive with a speed checker application to get the same results. I have two kinds of USB ports in my PC. The frontal two ports seem to be USB 2.0 while the back ports are of a later version. While the hard drive is connected, there is no message to state that the device can perform faster so I am certain that the hard drive is connected to a USB2.0 port(ie. in my case front port). Plus, I had similar problems with my other 4 GB Imation Nano Flash drive which gave only 4 Mb/s speed. Are the speeds normal? Do they intend to be significantly lower than the advertised speed? How do I improve my speed if the problem is with the PC? Please Help. Thank You in advance. :)

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August 27, 2011 at 09:45:59
That's actually quite normal. Look at the responses by OtheHill in this post.


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August 27, 2011 at 09:48:39
Just to be sure you have to recheck that you aren't getting bits and bytes mixed here.

480 is in bits and that is the max usb 2.0. So that is about 50M bytes at the very best. At 27MB that isn't too far off.

Gee, hope I am not wrong on this guess.

1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.

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