Even within the same technology (eg Ultra II) there is a performance
penalty for going over 2GB. Over 2GB you have to use FAT32 which has a
lot more cluster management overhead than FAT16. But your 4GB Extreme
IIIs certainly perform well with the right hardware. It would be
interesting to know the real bottleneck in those tests that showed no
improvement of ExIII over UII. Probably dumb programmers. :-)
Chuck Norcutt
Moose wrote:
> 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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