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Re: [OM] CF card read speeds [was No E-System pro camera until 2010 ; (

Subject: Re: [OM] CF card read speeds [was No E-System pro camera until 2010 ; ( - Now xD vs CF]
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Thu, 15 Oct 2009 22:27:33 -0400
I have a couple of new readers I picked up for only a few dollars each. 
  I bought them because they do micro-SD which is what my cell phone 
uses.  I'll have to give the CF card sockets a workout.

Chuck Norcutt


Sue Pearce wrote:
> I had some problems with extremely slow read times with a sub card reader/CF 
> combo, and it was the reader.
> 
> Bill Pearce
> ----- Original Message ----- 
> From: "Moose" <olymoose@xxxxxxxxx>
> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Thursday, October 15, 2009 6:25 PM
> Subject: [OM] CF card read speeds [was No E-System pro camera until 2010 ; 
> ( - Now xD vs CF]
> 
> 
>> Chuck Norcutt wrote:
>>> Then I clearly have a bottlneck(s) somewhere.  My USB 2.0 CF card reader 
>>> only runs about 7-8 MB/sec while the expresscard hits 10-12.  Most of my 
>>> CF cards are SanDisk Ultra II.  A few generations back.
>>>
>> Probably the reader/card combo, mostly reader. I did some testing of
>> read speeds, in MB/sec.:
>>
>>                          2GB    4GB
>> Reader                    UII   ExIII
>> -------------------------------------
>> Built-in in desktop       2.6   2.6
>> Old All-In One            5.6   5.6
>> NEW All-In One           10.0  20.4
>> Super Power              10.3  10.8
>> CF=>IDE=>USB              9.8  22.3
>>
>> You can see that the bottleneck varies between reader and card. Looks
>> like your 10-12 for an Ultra II is card limited, as expected.
>>
>> Moose
>> -- 
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