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installed new USB 3.0, only getting 50MB/second


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#1 jguff330

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Posted 08 January 2015 - 06:13 PM

I installed a new usb 3.0 slot into my motherboard, i connected it to power with the supplied 4pin to sata cable.  connected a new external harddrive that is 3.0 capable and a 3.0 usb cord but I'm only transferring at around 50-60 MB/second.  I was under the impression I'd get up to 1GB/second.  Any ideas if I did something wrong?

 

The USB 3.0 I installed is "Anker® Uspeed USB 3.0 PCI-E Express Card with 4 USB 3.0 Ports and 5V 4-Pin Power Connector for Desktops [VL805 Chipset]"



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#2 JohnC_21

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Posted 08 January 2015 - 06:30 PM

Hello, and Welcome USB 3.0 is 600MB/s theoretical so your speed will be slower but 60MB/s is USB2.0 speeds. Did you install the USB 3.0 driver?

#3 jguff330

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Posted 08 January 2015 - 06:37 PM

Yes I installed the driver and check to make sure it is up to date



#4 TsVk!

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Posted 08 January 2015 - 06:40 PM

What hard drive make and model?



#5 jguff330

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Posted 08 January 2015 - 06:47 PM

What hard drive make and model?

Western Digital My Book 4TB WDBFJK0040HBK-NESN


tried it with a 3.0 flash drive also, same results



#6 TsVk!

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Posted 08 January 2015 - 07:03 PM

Sequential read write speeds and randoml read/writes are different.... here's a quote from a WD My Book 4 TB benchmark test

 

"The My Book read a 4.97GB folder worth of multimedia files in 1:22 for a 58 MBps random read speed, while it took 1:30 (57 MBps) to write the same folder."

 

Here is the article


Edited by TsVk!, 08 January 2015 - 07:03 PM.


#7 jguff330

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Posted 08 January 2015 - 07:32 PM

So basically what you're saying is the hard drive I bought that's 3.0 actually has 2.0 speeds?



#8 TsVk!

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Posted 08 January 2015 - 07:39 PM

USB 2 theoretical speeds.... the reality is that USB 2 transfer speeds are generally only 15-20 MBps, your new card is 3x faster.



#9 Windont

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Posted 09 January 2015 - 01:08 AM

For what it's worth.. companies have been advertising 'USB 3.0/2.0 compatible' and not prominently displaying the drive's actual maximum speeds for a long time.


Edited by Windont, 09 January 2015 - 02:07 AM.


#10 TsVk!

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Posted 09 January 2015 - 02:25 AM

For sequential data the MyBook read/writes at 90MB+... it is a very good external drive. SATA speeds for many internal drives are similar.

 

Another quote from PC mag, about some top WD SSD's & HDD's.

 

"In AS-SSD, the Western Digital Black 4TB hit 123MBps sequential read and 141MBps sequential write. That's 23% and 51% faster than the Caviar Black 1TB, at 100MBps and 93MBps, respectively. The VelociRaptor was faster on both counts, at 201MBps read, and 187MBps write. The read speed difference is particularly interesting given that the VelociRaptor's rotational velocity is only 38% faster than the Black 4TB's 7,200rpm."

 

and from the Article I quoted before

 

"WD promises "ultrafast transfer rates" with the My Book, and it delivered just that during our tests. Writing a single 3.49GB file from our testbed to the My Book took just 37 seconds for a 97 MBps sequential write speed."

 

Personally, I remember waiting 20+ minutes for a tape to load 1200kb applications. :thumbup2:


Edited by TsVk!, 09 January 2015 - 02:42 AM.





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