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Deimos
15-07-2010, 03:18 PM
Got my first USB 3.0 device today and the performance is bad, the HDD is capable of around 100MB/s and yet I'm getting around 36MB/s, I got better speeds out of eSATA, anyone else had any experience with USB 3.0?

Speedy Gonzales
15-07-2010, 03:20 PM
Did you install the drivers for it if you're using Win7? I don't think Win7 fully supports it yet (until SP1 comes out which maybe next yr now)

Cellux
15-07-2010, 03:24 PM
Welcome to real life, where speeds are realistic.
Try an SSD instead of an HDD and you'll see speeds more to your liking.

Generally however, when a speed is said on a box, divide it by three and that's the real-world speed.

-- They also trick you with megabits (Mb)and megabytes (MB) per second.

Speedy: Usb 3.0 still has the speed capability.

Also, 36 MB/s is a 3.0 speed. 2.0 you'd be more likely to get closer to a max of say 9 MB/s

1101
15-07-2010, 03:32 PM
whats the actual sustained throughput spec of the HD, not the interface ??? Theres a reason that wont be on the box :punk

Deimos
15-07-2010, 03:44 PM
Welcome to real life, where speeds are realistic.
Try an SSD instead of an HDD and you'll see speeds more to your liking.

Generally however, when a speed is said on a box, divide it by three and that's the real-world speed.

-- They also trick you with megabits (Mb)and megabytes (MB) per second.

Speedy: Usb 3.0 still has the speed capability.

Also, 36 MB/s is a 3.0 speed. 2.0 you'd be more likely to get closer to a max of say 9 MB/s

Wow, what planet are you living on?

Let me break it down for you:

USB 2.0 480 Mbit/s = 60MB/s - I can achieve around 40MB/s (I don't know where you got 9 from)
eSATA 1.5 Gb/s = 187.5MB/s - With the same disk as above I can achieve around 90+ MB/s (which would be the disk's limit)
USB 3.0 3.2Gbit/s = 400MB/s (which is 10x faster than your claim of 40MB/s)

I fixed it, the PCIe bus was slightly overclocked (102Mhz) changing it back to 100Mhz seems to have fixed it, I now get around 85-95MB/s and with my OCZ SSD I get 150MB/s

SolMiester
15-07-2010, 03:55 PM
Got my first USB 3.0 device today and the performance is bad, the HDD is capable of around 100MB/s and yet I'm getting around 36MB/s, I got better speeds out of eSATA, anyone else had any experience with USB 3.0?

I bet its the marvel controller!

What size file\s are you benching?

Deimos
15-07-2010, 03:56 PM
I bet its the marvel controller!

What size file\s are you benching?

Its an NEC controller, I copied CS5 Master collection (around 4GB single file EXE) to and from the drive.

SolMiester
15-07-2010, 04:01 PM
Its an NEC controller, I copied CS5 Master collection (around 4GB single file EXE) to and from the drive.

Ha, lucky you then, stay away from Marvel!

Nomad
15-07-2010, 04:04 PM
I get 40-50MB/sec for USB2.

I guess USB3 would be great overall like for a lappie - portable USB HDs. For a PC there is eSATA. Surely whatever USB# cannot outrun eSATA on the same motherboard.

People don't need USB3 for printers, well for currently that is.

utopian201
15-07-2010, 04:18 PM
most tests for external usb drives have usb2 at about 30mb/s, usb3 is about 100mb/s

Cellux
15-07-2010, 04:27 PM
Earth. You're obviously living in some strange virtual space.

What the hell kind of files are you transferring to reach 40 MB/s?
Hot damn.

http://img249.imageshack.us/img249/6252/wowusb2point0isfast.png

I dare you to prove it.

Nomad
15-07-2010, 04:49 PM
Looks like you are transferring many diff files :p

When I do that, takes ages. 100GB could take me 3hrs.

Deimos
15-07-2010, 04:52 PM
Earth. You're obviously living in some strange virtual space.

What the hell kind of files are you transferring to reach 40 MB/s?
Hot damn.

http://img249.imageshack.us/img249/6252/wowusb2point0isfast.png

I dare you to prove it.

Seriously?

http://i538.photobucket.com/albums/ff345/Zeustek/Untitled.jpg

Transferring from a 6 disk RAID 5 array through USB 2.0 to a 500GB 5400 rpm laptop hard drive

http://i538.photobucket.com/albums/ff345/Zeustek/Untitled2.jpg

Transferring from a 2 disk RAID 0 array through USB 3.0 to a 60GB SSD (this is only 4GB if I transferred a larger file it would average 150MB/s easy)

Cellux
16-07-2010, 09:33 AM
I was wrong.

nofam
16-07-2010, 09:47 AM
I was wrong.

Hmmm. . . . :rolleyes:


Better to remain silent and be thought a fool, than to open your mouth and remove all doubt.

Speedy Gonzales
16-07-2010, 09:57 AM
I get just under SSD speed here then, using a GB network. It varies between 89-90. Probably depends on the size of the file/s

Cellux
16-07-2010, 09:59 AM
I'll be sure to remember that for next time.

SolMiester
16-07-2010, 10:28 AM
Pawnage!

The Error Guy
16-07-2010, 12:21 PM
USB 2.0 external WD HDD to internal HDD I easily get 20-35 and some times 40mb/s

wratterus
16-07-2010, 04:07 PM
I'm the same as speedy - moving files across a gigabit network is fastest - peaks at around 100mb/sec. Generally get around 30mb/sec with USB 2.0, but it does depend a lot on the content. Transferring 5gb of random files and folders is going to take a hell of a lot longer than an ISO of something.

McRuff
16-07-2010, 04:15 PM
Got my first USB 3.0 device today and the performance is bad, the HDD is capable of around 100MB/s and yet I'm getting around 36MB/s, I got better speeds out of eSATA, anyone else had any experience with USB 3.0?

Have you pushed the USB3 cable fully into the back of the computer. It has a half way point where it works as a USB2 cable. This happened to me first time I plugged mine in.

Deimos
16-07-2010, 05:43 PM
Have you pushed the USB3 cable fully into the back of the computer. It has a half way point where it works as a USB2 cable. This happened to me first time I plugged mine in.

Already fixed it, thanks.