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Forum: Memory Cards, Microdrives, Card Readers Apr 5, 2009, 7:18 PM
Replies: 35
Views: 64,162
Posted By TCav
Manufacturers advertise the speed of their flash...

Manufacturers advertise the speed of their flash memory cards using the most flattering method possible. That method is to measure the sustained throughput of the media itself. That's the 15MB/s on...
Forum: Memory Cards, Microdrives, Card Readers Apr 4, 2009, 7:26 PM
Replies: 35
Views: 64,162
Posted By TCav
DonalDuc wrote: One more time, the Class is...

DonalDuc wrote:
One more time, the Class is for the MINIMUM transfer rate. The 15MB/s spec (not "15 mb")on the card is the advertised MAXIMUM transfer rate.
Forum: Memory Cards, Microdrives, Card Readers Apr 4, 2009, 7:22 PM
Replies: 35
Views: 64,162
Posted By TCav
http://www3.pny.com/2GB-Optima-Secure-Digital-SD-6...

http://www3.pny.com/2GB-Optima-Secure-Digital-SD-60X-3-Pack-P2340C40.aspx
Forum: Memory Cards, Microdrives, Card Readers Apr 4, 2009, 6:00 PM
Replies: 35
Views: 64,162
Posted By TCav
DonalDuc wrote: ...

DonalDuc wrote:
http://www.sandisk.com/Products/Item(1086)-SDSDB-2048-A11-SanDisk_Standard_SD_Card_2GB.aspx

http://www.sandisk.com/Products/Item(1164)-SDSDH-002G-A11-SanDisk_Ultra_II_SD_2GB.aspx...
Forum: Memory Cards, Microdrives, Card Readers Apr 4, 2009, 12:19 PM
Replies: 35
Views: 64,162
Posted By TCav
BUT THERE'S NOTHING IN THE SPEC THAT SAYS THAT SD...

BUT THERE'S NOTHING IN THE SPEC THAT SAYS THAT SD CARDS CAN'T BE CLASS2 , 4 OR 6.

AN SD CARD CAN MEET THE NEW SPEC WITHOUT BEING AN SDHC CARD.

GET IT?
Forum: Memory Cards, Microdrives, Card Readers Apr 2, 2009, 12:11 PM
Replies: 35
Views: 64,162
Posted By TCav
DonalDuc wrote: No. The SD Specifications,...

DonalDuc wrote:

No. The SD Specifications, version 2.00, defines both SDHC and Class 2/4/6. Further, it requires that SDHC cards meet at least Class 2. However, it does not exclude SD Cards (as...
Forum: Memory Cards, Microdrives, Card Readers Apr 1, 2009, 8:36 PM
Replies: 35
Views: 64,162
Posted By TCav
http://www.sandisk.com/Assets/LargeImages/III%20SD...

http://www.sandisk.com/Assets/LargeImages/III%20SD-SDHC%20Cards/ExtremeIIISD_130_2GB20MBsClass6.jpg

http://www.sandisk.com/Assets/LargeImages/II%20SD%20and%20SDHC/Ultra%20II%20SD_130_2GB.jpg
...
Forum: Memory Cards, Microdrives, Card Readers Mar 31, 2009, 8:40 PM
Replies: 35
Views: 64,162
Posted By TCav
DonalDuc wrote: From the SD Association...

DonalDuc wrote:
From the SD Association websiteHome » Developers » SD Technology » SD Speed Class (http://www.sdcard.org/developers/tech/speed_class/):

"These new speeds are available in a...
Forum: Memory Cards, Microdrives, Card Readers Mar 31, 2009, 4:09 PM
Replies: 35
Views: 64,162
Posted By TCav
Once again, the SD Class is a specification on...

Once again, the SD Class is a specification on the MINIMUM throughput of a card, not the maximum throughput.
Forum: Memory Cards, Microdrives, Card Readers Mar 31, 2009, 8:07 AM
Replies: 35
Views: 64,162
Posted By TCav
All manufacturers state the maximum transfer rate...

All manufacturers state the maximum transfer rate of their flash memory products. The SD Association's Class designations are for the minimum transfer rates. In other words, the card may perform as...
Forum: Memory Cards, Microdrives, Card Readers Mar 25, 2009, 8:19 AM
Replies: 35
Views: 64,162
Posted By TCav
First, I think the salesperson may have been...

First, I think the salesperson may have been familiar with using the camera you bought as a still camera, not a video camera, so he felt comfortable recommending the Ultra II Class 2 card for that...
Forum: Memory Cards, Microdrives, Card Readers Dec 15, 2008, 7:55 AM
Replies: 35
Views: 64,162
Posted By TCav
captbly1 wrote: The manufacturers say their...

captbly1 wrote:
The manufacturers say their cards are fast, but when subjected to the SD Association's test, they aren't. That's why a card that Lexar says can transfer data at 9MBps is only a...
Forum: Memory Cards, Microdrives, Card Readers Dec 14, 2008, 9:39 PM
Replies: 35
Views: 64,162
Posted By TCav
captbly1 wrote: There is. It's the SD...

captbly1 wrote:
There is. It's the SD Association SD Card CLasses. It does not, however, keep companies from advertising their own numbers.
Forum: Memory Cards, Microdrives, Card Readers Dec 14, 2008, 8:49 PM
Replies: 35
Views: 64,162
Posted By TCav
Actually, there are only 3 classes: Class 2,...

Actually, there are only 3 classes: Class 2, Class 4, and Class 6. A better question might be why it isn't a Class 6 card.

The SD Association SD Card CLasses are determined by tests established by...
Forum: Memory Cards, Microdrives, Card Readers Dec 14, 2008, 7:26 PM
Replies: 35
Views: 64,162
Posted By TCav
The Speed Class for SD cards is the guaranteed...

The Speed Class for SD cards is the guaranteed minimum transfer speeds. The specification of, for instance, "9MB/sec" is the maximum transfer speed. The difference is that when you're shooting video,...
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