USB2.0 slow transfer

Dolby

Dolby

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I've got a Asus P8-B75v which is, afaik, USB3.0.

However a friend came over the other day and we tried to copy something to her 8GB USB stick - 3MB/sec :/ I tried both my memory sticks here and got 3MB/sec on one and 11MB/sec on the other.

Running Windows 7 64 bit and just updated the chipset and USB drivers from the Asus site, but still the same.

Surely even a USB2.0 stick runs at over 30MB/sec?
 
Depends on the quality of the flash itself. The interface might have a high theoretical transfer rate but the bottleneck is usually the flash itself.
 
no flashdrives are slow. my one writes at 2MB and my new one at 12MB age also seems to slow them down
 
Dolby said:
I've got a Asus P8-B75v which is, afaik, USB3.0.

However a friend came over the other day and we tried to copy something to her 8GB USB stick - 3MB/sec :/ I tried both my memory sticks here and got 3MB/sec on one and 11MB/sec on the other.

Running Windows 7 64 bit and just updated the chipset and USB drivers from the Asus site, but still the same.

Surely even a USB2.0 stick runs at over 30MB/sec?
Click to expand...

USB 2.0 is slow - won't get much better than 12 in my experience.

And USB 3.0 sticks are not created equal either - I've had ones run as slow as 14
 
AfricanTech said:
USB 2.0 is slow - won't get much better than 12 in my experience.

And USB 3.0 sticks are not created equal either - I've had ones run as slow as 14
Click to expand...

Yeah, in my experience, even the same brand can be variable. E.g. we tested a whole bunch of flash drives, and decided to get Kingston 16gb USB 3 drives (blue and white), because we could get 27MB/second bulk throughput. But the other day, I had to write 10GB to 20 drives, and was getting 3MB/s on all of them. No changes to the host, and a different batch gave me 27MB/s again.

Annoying!
 
I haven't tried to see what my external HDD will give - but guessing far more?

In other words, USB2 port is ok for transfer and the issue is more the actual stick?
 
Dolby said:
I haven't tried to see what my external HDD will give - but guessing far more?

In other words, USB2 port is ok for transfer and the issue is more the actual stick?
Click to expand...

I can get about 28MB/s copying to my external USB drive. Even though the drive is USB 3, my laptop only has USB 2 ports. I use TeraCopy to copy the files.
 
mintydroid said:
It's along dependant on file size and arrangement.
Click to expand...

Partially, yes. In my case, I was using OS X, and dd'ing a 10GB Kali linux image to each of the flash drives.

$ pv disk.img | sudo dd of=/dev/rdisk3 bs=1m

Was reporting between 3MB/s and 27MB/s, depending on the specific flash drive I was using.
 
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