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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