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Windows 7: USB 3.0 starts transfer at 100mbps, freezes, speed reduces to 3-4mbps


01 Jan 2013   #1

Windows 7 Ultimate x64
 
 
USB 3.0 starts transfer at 100mbps, freezes, speed reduces to 3-4mbps

I have a Verbatim pen drive, the capacity is 16 GB. When I start any transfer, say of a 300 Mb file, the first 200 Mb of data gets transferred at about 100 Mbps, then it freezes for at least 2-3 minutes after which the last 100 Mb will get transferred at 8 Mbps. This happens with every file. I reinstalled the USB 3.0 drivers and the pen drive is connected in a 3.0 port. Any suggestions?

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01 Jan 2013   #2

Win7 Ultimate X64
 
 

Have you tried the onboard usb 3 ports at rear of pc/mobo are these the same
My System SpecsSystem Spec
01 Jan 2013   #3

Windows 7 Ultimate x64
 
 

Yes, these are the onboard 3.0 ports which are at the rear of the PC.
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01 Jan 2013   #4

Windows 7 Ultimate 64 bit
 
 

The device you are transferring to, is it usb 3.0 or is it strickly a usb 2.0 device?
My System SpecsSystem Spec
01 Jan 2013   #5

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by bassfisher6522 View Post
The device you are transferring to, is it usb 3.0 or is it strickly a usb 2.0 device?
It's a USB 3.0 device.
My System SpecsSystem Spec
01 Jan 2013   #6

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

The system and/or USB protocols allow for data transfer safeguards. The system will always throttle back to the safest possible speed to insure correctly transferring the ones and zeros. For instance if a file is on a spinning disk and is badly fragmented the transfer will be slowed down to allow the disk time to find and access the data from all over the platter.

Dropping from 100 to 8 is dramatic. So I would immediately suspect something amiss with the file system or disk health on either the stick or the disk it is transferring from/to. Good excuse to run dskchk and/or the manufacturer's diagnostic anyway. Can't hurt, might help.

There are other factors that can affect file transfer rates. Say you were trying to multitask and transfer the file while editing video or scanning for viruses or something. That would definitely throw a wet towel over the process!
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 USB 3.0 starts transfer at 100mbps, freezes, speed reduces to 3-4mbps




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