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[OM] Re: OT (semi): CF card speed question

Subject: [OM] Re: OT (semi): CF card speed question
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sun, 22 Jul 2007 21:52:45 -0400
But one should at least be able to infer that, for a given card, its 
read performance should be better than its write performance.  Something 
is seriously wrong with the implementation if that's not true.

Chuck Norcutt

Moose wrote:
> Chuck Norcutt wrote:
>> The dpreview test of the 410 shows that the camera is capable of writing 
>> about 7 MB/sec if it has a card that's fast enough. 
>> <http://www.dpreview.com/reviews/olympuse410/page10.asp>
>> Looking back at tests for the Canyon 5D (since older cards were being 
>> used for testing then) 
>> <http://www.dpreview.com/reviews/canoneos5d/page11.asp>
>> we find that the SanDisk 4GB Ultra II (which I consider the sweet spot 
>> for a 5D) is only hitting 5.1 MB raw write speed while the Lexar Pro 2GB 
>> 80x is hitting 7.1 MB and the SanDisk 2GB Extreme III is up to 8.3 MB. 
>> I find this a somewhat curious result since my 2GB SanDisk Ultra II is 
>> decidedly faster on download than my 8GB Lexar 133X.  I've never tested 
>> either one on write times in camera since I'm not a speed shooter. 
> It was true for a long time, and may still be true, that Lexar read 
> times were significantly slower than Sandisk even though write times 
> were about the same. Thre is no necessary relationship between read and 
> write performance in practice.
> 
> Moose
> 
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