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635 posts

Ultimate Geek
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# 143674 23-Apr-2014 13:34
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Hi guys,

My thumb drive just isn't performing as well as it should be.

Its a Sandisk 32Gb USB 3.0 Thumb drive on a USB 2.0 port of a PC - which has a theoretical top speed of 60MB/s (I think).

The computer itself has a Intel SSD which shows a read performance of about 160MB/s (tested with HD Tune)

The Thumb drive has a write performance (tested again in HD tune) of about 30MB/s - but when I actually copy a file I am lucky to get 8MB/s.

Surely I should be getting something more up in the 20-30 mark, but why not?

What do other people get (sustained) on USB 2 thumb drives?


-Al

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BDFL - Memuneh
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  # 1029787 23-Apr-2014 14:07
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USB drives vary dramatically, and even those "USB 3.0" ones can have problems. I've a Kingston here that's superb, while a Sony supposedly USB 3.0 memory key is terrible. I've posted results here so you can have an idea by looking at four or five different drives.





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  # 1029798 23-Apr-2014 14:19
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USB3 port to USB2 stick: 10 MB/sec
USB3 port to USB3 stick: 18.5 MB/sec
[tested with one 1.5GB file]

EDIT These are write speeds - read speeds are more than double these speeds




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  # 1029801 23-Apr-2014 14:20
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I will post the images here. Basically you pay more you get more:

Kingston USB3:



Sony USB3:



HP USB2:



No brand USB 2:







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Ultimate Geek
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  # 1029810 23-Apr-2014 14:33
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Funny thing is that I thought Sandisk *was* a good brand?!?!? After all the make memory chips!

I see that even with your Kingston USB2 performance is similar.

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  # 1029814 23-Apr-2014 14:35
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I had a similar issue with a USB Hard drive - really slow transfer speeds. Which was fixed with the below.
Are you using Windows 8.1?

http://blogs.msdn.com/b/usbcoreblog/archive/2013/11/01/help-after-installing-windows-8-1-my-usb-drive-disappears-or-file-transfers-stop-unexpectedly-r-a-post-title.aspx


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  # 1029849 23-Apr-2014 15:32
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bigal_nz:
Funny thing is that I thought Sandisk *was* a good brand?!?!? After all the make memory chips!

I see that even with your Kingston USB2 performance is similar.


???

It's a Kingston USB3, and you can see the write speeds is way more than your SanDisk. The Sony is the one with a "funny" write speed.








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Ultimate Geek
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  # 1029974 23-Apr-2014 17:54
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freitasm:
bigal_nz:
Funny thing is that I thought Sandisk *was* a good brand?!?!? After all the make memory chips!

I see that even with your Kingston USB2 performance is similar.


???

It's a Kingston USB3, and you can see the write speeds is way more than your SanDisk. The Sony is the one with a "funny" write speed.




I was replying to your comment "you pay more you get more" and that the USB stick I originally referred to in the OP is a Sandisk. With regard to you may more you get more - I thought I got more when I brought Sandisk!

-Al

 
 
 
 


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  # 1029979 23-Apr-2014 18:08
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I'm getting a Kingston USB 3.0 thumb drive after reading the blog by freitasm unless he wants to sell me his one cheap :P

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  # 1030000 23-Apr-2014 18:19
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bigal_nz:
freitasm:
bigal_nz:
Funny thing is that I thought Sandisk *was* a good brand?!?!? After all the make memory chips!

I see that even with your Kingston USB2 performance is similar.


???

It's a Kingston USB3, and you can see the write speeds is way more than your SanDisk. The Sony is the one with a "funny" write speed.




I was replying to your comment "you pay more you get more" and that the USB stick I originally referred to in the OP is a Sandisk. With regard to you may more you get more - I thought I got more when I brought Sandisk!

-Al


Have you checked it's not a fake?

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  # 1030019 23-Apr-2014 18:47
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eluSiveNZ: I had a similar issue with a USB Hard drive - really slow transfer speeds. Which was fixed with the below.
Are you using Windows 8.1?

http://blogs.msdn.com/b/usbcoreblog/archive/2013/11/01/help-after-installing-windows-8-1-my-usb-drive-disappears-or-file-transfers-stop-unexpectedly-r-a-post-title.aspx



this fix is now rolled out thru Windows Update BTW

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  # 1030027 23-Apr-2014 19:08
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i ended up receiving a fake/factory second Samsung micro SD card, so it does pay to check them

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  # 1034077 30-Apr-2014 15:46
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Unbelievable that the Sony 3.0 USB has such a crappy write speed !!! Marginally better than the NoName at USB2 write speeds.

 

 

Read speeds nothing to write home about either.

 

 

Ahh, Sony after all. Beliveable these days. NFSE ..

 

 





My thoughts are no longer my own and is probably representative of our media-controlled government


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