Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

17319 posts

Uber Geek
+1 received by user: 2088


Topic # 81954 20-Apr-2011 14:49
Send private message

I have read how in theory USB 3.0 have much higher bandwidth (5Gbps) vs eSATA 2.0 (3Gbps)

I have also read some tests which suggest in the real world this is not true: so I tried to buy a new drive to test it out.

Transfer: 3GB single file
Computer: i7 laptop with 280MBps (R/W) SSD

eSATA Toshiba 500GB 7200rpm drive to transfer file to SSD: burst speed of 180MBps then slows down to 90MBps
SSD to eSATA: burst speed of 160MBps then slows down to 90MBps

USB 3.0 Toshiba 1TB 5400rpm drive to receive file from SSD: burst speed to 220MBps for 1 sec then slows down to 30MBps and at the end of copying had to wait 30 sec to complete file transfer

USB 3 to transfer file to SSD: constant rate of 30MBps

Now i know this is hardly scientific as the hard disks are different BUT the new USB3 drive has no way to let me open and swap the disks so I can't put the 7200rpm disk in it. 

I'm sticking to eSATA despite needing to plug 2 cables in (one for data one for power). THere are newer eSATA devices that only require one cable. My advise is buy those and NOT the USB3 drives.

Create new topic

17319 posts

Uber Geek
+1 received by user: 2088


  Reply # 460962 20-Apr-2011 15:18
Send private message

just had a thought ... maybe my port isn't running at usb 3 speed ...

17319 posts

Uber Geek
+1 received by user: 2088


  Reply # 460967 20-Apr-2011 15:33
Send private message

or the drive device isnt running at proper usb 3 speed. apparently you must see a "superspeed usb3.0" logo to ensure that product is certified ... hmmm but it's a toshiba!


431 posts

Ultimate Geek
+1 received by user: 7


  Reply # 460991 20-Apr-2011 16:32
Send private message

Even though USB 3.0 has a higher potential bandwidth, it still doesn't support DMA transfers. That means it relies on the processor to manage the transfer of data, which can be a limiting factor. eSATA on the other hand supports DMA transfers and is able to utilize the full bandwidth available.

1332 posts

Uber Geek
+1 received by user: 152
Inactive user

  Reply # 462226 25-Apr-2011 17:20
Send private message

Yah, USB 3.0 will stay where it is at the moment for me. A way to easily transfer small(ish) amounts of data via data stick.

I'll probably grab a USB 3.0 stick at some point as a local physical backup to keep my workstation files secure.

4025 posts

Uber Geek
+1 received by user: 1076


  Reply # 463188 28-Apr-2011 02:07
Send private message

30MBps is what i get on my WD Elements USB 2.0 drives.

17319 posts

Uber Geek
+1 received by user: 2088


  Reply # 465822 5-May-2011 16:05
Send private message

DIANOSIS: i stupidly was delusioned that i had a usb 3 port which i didn't!!!

bought a USB 3 expresscard from ebay AUD 18. installed (download from author) renesas generic USB3 driver ... and now:

Toshiba Ext HDD -> SSD
burst speed 300MBps and stabilises around 120MBps

SSD -> Ext HDD
burst speed around 210MBps and stabilises around 90 MBps

single cable!!!
either way the 5400rpm 1TB USB3 at least as fast as the eSATA 7200rpm 500GB (something to do with data density vs rotational speed vs radius??)

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

Vocus New Zealand on the block as Aussies bail
Posted 23-Oct-2017 17:06

Vodafone TV — television in the cloud
Posted 17-Oct-2017 19:29

Nokia 8 review: Classy midrange pure Android phone
Posted 16-Oct-2017 07:27

Why carriers might want to embrace Commerce Commission study, MVNOs
Posted 13-Oct-2017 09:42

Fitbit launches Ionic, its health and fitness smartwatch
Posted 12-Oct-2017 15:52

Xero launches machine learning automation to improve coding accuracy for small businesses
Posted 12-Oct-2017 15:45

Bank of New Zealand uses Intel AI to detect financial crime
Posted 12-Oct-2017 15:39

Sony launches Xperia XZ1, a smartphone with real-time 3D capture
Posted 11-Oct-2017 10:26

Notes on Nokia’s phone comeback
Posted 10-Oct-2017 10:06

Air New Zealand begins Inflight Wi-Fi rollout
Posted 9-Oct-2017 20:16

The latest mobile phones in perspective
Posted 9-Oct-2017 18:34

Review: Acronis True Image 2018 — serious backup
Posted 8-Oct-2017 11:22

Lenovo launches ThinkPad Anniversary Edition 25
Posted 7-Oct-2017 23:16

Less fone, more tech as Vodafone gets brand make-over
Posted 6-Oct-2017 08:16

API Talent Achieves AWS MSP Partner Status
Posted 5-Oct-2017 21:20

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.