Go Back   MacRumors Forums > Apple Hardware > Notebooks > MacBook Pro

Reply
 
Thread Tools Search this Thread Display Modes
Old Jan 8, 2013, 08:03 PM   #1
jeharg
macrumors newbie
 
Join Date: Dec 2012
usb 3.0 problem :s

Hi friend!!
Today I bought a mbp!
I got a wd external 3.0 usb Drive but transfer rate is like usb 2.0, the cable is the correct and I havnt pkug any other device yet
What could it be??
Thanks a lot!!!!
jeharg is offline   0 Reply With Quote
Old Jan 8, 2013, 08:07 PM   #2
SDAVE
macrumors 68020
 
Join Date: Jun 2007
Location: Nowhere
Go to System Preferences, hardware > USB...find your WD drive, what speed is it running at?

P.S. you didn't mention what MBP you have. Only MBP's after 2012 have USB 3.0.
__________________
iPhone 5, MacBook Pro (2011), Mac Pro 2008, Apple Cinema Display 30" Aluminium
SDAVE is offline   2 Reply With Quote
Old Jan 8, 2013, 08:19 PM   #3
jeharg
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
i got a macbook pro 2012
in my System preferences it says, til 5gb/s :S
jeharg is offline   0 Reply With Quote
Old Jan 8, 2013, 08:23 PM   #4
SDAVE
macrumors 68020
 
Join Date: Jun 2007
Location: Nowhere
Then your drive is slow.

Use Black Magic Speed Test app from the App store and post a screenshot here.
__________________
iPhone 5, MacBook Pro (2011), Mac Pro 2008, Apple Cinema Display 30" Aluminium
SDAVE is offline   1 Reply With Quote
Old Jan 8, 2013, 08:25 PM   #5
jeharg
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
but my wd my passport says ití's 3.0 :S
how could it be?
That speed test marks 78 read and 79 write mb/s
jeharg is offline   0 Reply With Quote
Old Jan 8, 2013, 08:30 PM   #6
thedarkhorse
macrumors 6502a
 
Join Date: Sep 2007
Location: Canada
just because it has usb 3.0 doesn't mean you will get max 3.0 speeds, it is still limited by the hard drive inside it. seems about right for a 5400rpm 2.5" drive
thedarkhorse is offline   0 Reply With Quote
Old Jan 8, 2013, 08:31 PM   #7
jeharg
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
here is the image
Attached Thumbnails
Click image for larger version

Name:	Captura de pantalla 2013-01-08 a la(s) 22.27.34.png
Views:	9
Size:	745.5 KB
ID:	388879  
jeharg is offline   0 Reply With Quote
Old Jan 8, 2013, 08:33 PM   #8
jeharg
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
Quote:
Originally Posted by thedarkhorse View Post
just because it has usb 3.0 doesn't mean you will get max 3.0 speeds, it is still limited by the hard drive inside it. seems about right for a 5400rpm 2.5" drive
yes, but it says it has 5gb/s in the usb details in hardware, on my mbpro :S
jeharg is offline   0 Reply With Quote
Old Jan 8, 2013, 08:35 PM   #9
duervo
macrumors 6502a
 
Join Date: Feb 2011
Quote:
Originally Posted by jeharg View Post
but my wd my passport says ití's 3.0 :S
how could it be?
That speed test marks 78 read and 79 write mb/s

USB 3.0 is just the interface between the enclosure holding the drive and the USB 3.0 port in your MBP.

The drive itself is most likely a 5400RPM drive, which will be the bottleneck. While it will be faster than USB 2.0 speeds, it won't be fast enough to completely fill a USB 3.0 pipe.
duervo is offline   0 Reply With Quote
Old Jan 8, 2013, 08:36 PM   #10
thedarkhorse
macrumors 6502a
 
Join Date: Sep 2007
Location: Canada
that's because it is just telling you that 5gb/s is the max limit of usb3.0, your computer is capable of that transfer speed, but your hard drive is not. No single hard drive or SSD will transfer at 5gb/s, you'd need a bunch of fast drives/ssds in RAID 0 just to get near 1gb/s
thedarkhorse is offline   0 Reply With Quote
Old Jan 8, 2013, 08:39 PM   #11
jeharg
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
I've been fu++ed up by Western digital people?
:S:S 1 tera with that data transfer rate is like nothing :S
jeharg is offline   0 Reply With Quote
Old Jan 8, 2013, 08:45 PM   #12
throAU
macrumors 68030
 
Join Date: Feb 2012
Location: Perth, Western Australia
Quote:
Originally Posted by jeharg View Post
yes, but it says it has 5gb/s in the usb details in hardware, on my mbpro :S
That is USB3's interface speed. You won't get that speed out of a spinning hard drive.

The absolute max speed you're likely to get out of a SATA spinning disk (like, say my 3.5" western digital black) is roughly 100 megabytes/sec or so.


Also MB/sec (bytes) vs Mb/sec (bits).

If you were running USB 2, that is 480 megaBITS per second link speed, in reality nearer 320 megabit throughput. If your drive was running at USB2 speed you would be getting less than 40 megabytes per second. To convert bits/sec to bytes/sec divice by 10.

Yes, there are 8 bits to a byte but there's a bit of signalling overhead and divide by 10 is roughly accurate once that is taken into account and easy to calculate in your head.

You're getting nearly double that.
__________________
MBP (early 2011) - Core i7 2720 2.2ghz, Hires Glossy, 16GB, Seagate Momentus XT 750GB
Mac Mini (mid 2007) - Core2 Duo 1.8, 2gb, 320gb 7200 rpm
iPhone 4S, iPad 4, iPad Mini, HTC One (eval)

Last edited by throAU; Jan 8, 2013 at 08:51 PM.
throAU is offline   1 Reply With Quote
Old Jan 8, 2013, 09:10 PM   #13
SDAVE
macrumors 68020
 
Join Date: Jun 2007
Location: Nowhere
Quote:
Originally Posted by jeharg View Post
here is the image
That seems fine for a mechanical drive.

If you get an external USB 3.0 enclosure like and pop in an SSD you will definitely get 300MB/sec+ for read and write.

USB 3.0 breaks USB 2.0 limits and FW800 limits. It doesn't mean that your drive is fast enough for the interface to be maxed out.

----------

Quote:
Originally Posted by jeharg View Post
I've been fu++ed up by Western digital people?
:S:S 1 tera with that data transfer rate is like nothing :S
No, your HDD is being maxed out by the interface, not the other way around.

If you get something like this, then you will definitely push your USB3.0 port to it's max. They even have a thunderbolt version.
__________________
iPhone 5, MacBook Pro (2011), Mac Pro 2008, Apple Cinema Display 30" Aluminium
SDAVE is offline   1 Reply With Quote
Old Jan 8, 2013, 09:33 PM   #14
Stetrain
macrumors 68040
 
Join Date: Feb 2009
Quote:
Originally Posted by jeharg View Post
I've been fu++ed up by Western digital people?
:S:S 1 tera with that data transfer rate is like nothing :S
The connection between the hard drive and your computer is the full USB 3.0 5GB/s. The problem is that the hard drive itself is not capable of putting out those kinds of speeds.

Putting a fast solid state drive in the same enclosure should result in much faster transfer speeds.
Stetrain is offline   1 Reply With Quote
Old Jan 8, 2013, 10:01 PM   #15
boto
macrumors 6502
 
Join Date: Jun 2012
75 mb/s Read/Write? Your external hard drive is within spec. That is the range of values you should receive with USB 3.0 + a 5400RPM hard drive.
__________________
iMac 27" 3.4Ghz, GTX 680MX, 1TB FD, 32GB RAM | rMBP 2.6Ghz/16GB RAM/256GB | 16GB iPhone 5 White | 16GB iPad 3rd Gen White | Time Capsule 2TB | Apple TV 3
boto is offline   1 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Notebooks > MacBook Pro

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Usb Problem. Intelligent MacBook Air 5 Feb 7, 2014 08:28 AM
Usb problem. paul1993 MacBook Pro 7 Oct 4, 2013 10:44 AM
problem with USB vr3003 Mac Basics and Help 2 Sep 19, 2013 01:30 PM
10.4 and USB Wi-Fi problem SaxicolousOne OS X 1 Jun 17, 2013 12:37 PM
Worried it's more than a usb problem kj50state Mac Basics and Help 2 Nov 8, 2012 07:20 PM

Forum Jump

All times are GMT -5. The time now is 07:50 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC