Speed of Your USB 2.0 Reader

RBray · Jan 10, 2003

I did a search here for this question and didn't see it. Sorry if this has been battered around a lot...

I am using a 340MB Microdrive and a USB 2.0 (SIIG) reader and only getting about 2.1MB/s on my transfers. This is much faster than the 0.25 MB/s transfer from the in-camera USB 1.1, but am curious if this is an average time for the 2.0.

Thanks for your time.
--
Pleased D30 owner
'Never give up hope, Quantum Tunneling exists!'

PaulMM · Jan 11, 2003

I don't know if this will help because its kind of an apples to oranges comparison, but using the following:

SimpleTech 256 Meg CF card
USB 2.0 card in the PC
iApp CR e500 Card reader (attached to the USB 2.0 card in the PC)

I get 71 MB transferred in approximately 26.5 seconds from the CF card onto my PC hard drive. That's roughly 2.7 MB per second.

Also see: http://www.dpreview.com/articles/mediacompare/

RBray said:
I did a search here for this question and didn't see it. Sorry if
this has been battered around a lot...

I am using a 340MB Microdrive and a USB 2.0 (SIIG) reader and only
getting about 2.1MB/s on my transfers. This is much faster than
the 0.25 MB/s transfer from the in-camera USB 1.1, but am curious
if this is an average time for the 2.0.

Thanks for your time.
--
Pleased D30 owner
'Never give up hope, Quantum Tunneling exists!'

--
Paul

txt · Jan 11, 2003

The data bottle neck is at the controller inside each of the CF card not the reader. A faster controller (newer CF card) will transfer data faster and vice versa.

TXT

a d-100 owner

RBray said:
I did a search here for this question and didn't see it. Sorry if
this has been battered around a lot...

I am using a 340MB Microdrive and a USB 2.0 (SIIG) reader and only
getting about 2.1MB/s on my transfers. This is much faster than
the 0.25 MB/s transfer from the in-camera USB 1.1, but am curious
if this is an average time for the 2.0.

Thanks for your time.
--
Pleased D30 owner
'Never give up hope, Quantum Tunneling exists!'

R. Bond · Jan 11, 2003

RBray

I'm using a Zio cf usb 1 card reader and have 1/512 mb Ridata, 1/256 mb Delkin and 1/256mb Sandisk ultra. Both the Ridata 20x and Delkin transfer at 1 mb/sec and the Sandisk Ultra at .9 mb/sec. I would be tickled to get 2.1 mb/sec transfers. I will be switching to usb 2 in the near future.

I'm wondering if the Lexar 24x cards will transfer faster. I plan on buying one in a month or so, but mostly for the write speed.

RB

mats jonsson99386 · Jan 12, 2003

I have a 512Mb CF Transcend 25x card and a USB2.0 Datafab reader. It reads the full card in 75 seconds(!) That makes 6.7MB/s true speed...
Writing takes slightly longer time.

RBray said:
I did a search here for this question and didn't see it. Sorry if
this has been battered around a lot...

I am using a 340MB Microdrive and a USB 2.0 (SIIG) reader and only
getting about 2.1MB/s on my transfers. This is much faster than
the 0.25 MB/s transfer from the in-camera USB 1.1, but am curious
if this is an average time for the 2.0.

Thanks for your time.
--
Pleased D30 owner
'Never give up hope, Quantum Tunneling exists!'

RBray · Jan 12, 2003

Thank you guys/gals for the replies. I figured the true bootleneck was the card speed itself, but wanted to know if I was in the ballpark. Seems that I am.

RBray said:
I am using a 340MB Microdrive and a USB 2.0 (SIIG) reader and only
getting about 2.1MB/s on my transfers. This is much faster than
the 0.25 MB/s transfer from the in-camera USB 1.1, but am curious
if this is an average time for the 2.0.

--
Pleased D30 owner
'Never give up hope, Quantum Tunneling exists!'

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Speed of Your USB 2.0 Reader

RBray

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PaulMM

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txt

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R. Bond

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mats jonsson99386

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RBray

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