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-   Memory Cards, Microdrives, Card Readers (https://forums.steves-digicams.com/memory-cards-microdrives-card-readers-51/)
-   -   Flash Memory Card Info (https://forums.steves-digicams.com/memory-cards-microdrives-card-readers-51/flash-memory-card-info-39610/)

steve Dec 6, 2004 11:17 AM

If you're confused by all the different types of memory cards then give a look-see to our Flash Memory Cards information page. We cover the types of cards and their capacities from CompactFlash to xD-Picture Cards.

And if you have a need for large capacity CF or SD card for a dSLR or prosumer camera then be sure to see our High-Capacity Storage Options page too.

With all the new and inexpensive 2GB and 4GB SD cards out there a lot of people are tempted to buy one. Make sure your camera can handle a capacity over 1GB or 2GB before buying the card - most modern cameras can use up to 2GB but most CANNOT use a 4GB size card.

NOTE that a lot of our reviews were written BEFORE large SD cards (over 1GB) were available -- and only some ofthe verynewest 2006 cameras can use the new SDHC type SD cards.

http://www.steves-digicams.com/memory/sdcards.jpg



Photo 5 Aug 29, 2009 12:52 AM

These pages need a quick updating when time permits. The CF page says capabilities up to 12GB. They are now selling cards at 32GB and 64GB are coming very soon (this fall will be on sale). 16GB are being sold in large quantities these days according to newegg.com. Also under xD cards are now available up to 2GB (not just 1GB).

dave

Old Boy Jan 8, 2011 12:45 PM

Flash / Memory Cards:
 
Note:
= (Flash / Memory Cards)
= ( SDHC )

There are many different "TYPES" of cards.

- Size of Card = Standard, Mini and Micro.
- Storage Space, up to 64GB (64,000 MB).
- Speed Class Rating, up to Class 10: (10 MB/s).
- Newer Speed Rating, up to Class UDMA 6:.(90 MB/s).

----------------------------------------------------------------

Sizes:

- Standard... = 32.0mm x 24.0mm
- Mini .......... = 21.5mm x 20.0mm
- Micro......... = 11.0mm x 15.0mm

----------------------------------------------------------------

Speed Class Rating:

The Speed Class Rating is the official unit of speed measurement for SD Cards,
defined by the SD Association.
It is equal to 1 MB/s (8 Mbit/s),
and it measures the minimum sustained write speeds for a fragmented state.

The following are the ratings of some currently available cards:
Class 2 = 2 MB/s
Class 4 = 4 MB/s
Class 6 = 6 MB/s
Class 10 = 10 MB/s

----------------------------------------------------------------

Notes:

SDHC cards should have a capital "C" letter, with a (#) inside.

This will indicate the Speed Class Rating.
I have found older SDHC cards, with no class (#) rating.
In almost all cases, these cards, are rated at Class 2: = (2 MB/s ).

The newer advanced professional cards, are now rated at a Speed Rating, using UDMA,
and posting the MB/s, on the card.

----------------------------------------------------------------

Warnings:

- Be sure that your device / devices, will be able to handle the higher GB card.
- Many of the card readers, USB jacks, and etc. are limited to 16GB or 32GB.
- Be sure that the SDHC card has a Speed Class Rating (C#)
and posted # MB/s on the SDHC card, are of the same compatible value.
- A card with a Standard Speed Class Rating (C#) not equal / same, to the MB/s posted = Garbage !

----------------------------------------------------------------

Purchasing:

Quotes: From Steve - Administrator:
http://www.steves-digicams.com/accessories/flash-cards-storage-devices/
(a look-see to our Flash Memory Cards information page).
Quoted: Note -- Note -- Note = eBay has become notorious, etc etc.

I totally agree, with Steve,
but there are also some reputable Canadian / U.S. eBay Sellers. (Save Big Time).
--> I just purchased two (x2) SDHC flash cards, (Brand Name), 8GB, Class 4, blue color,
= New in sealed original, manufactured containers.
--> From eBay Canada, (Canadian Seller), I saved over 50% in total cost.
Each card sells for, including shipping, is under $14.00 !
--> Canadian stores sell the exact same (Brand Name) card for $30.50 !

----------------------------------------------------------------
.
..

JimC Jan 8, 2011 12:59 PM

There are many counterfeit cards being sold on Ebay, so I wouldn't buy mine there.

Personally, I stick to http://www.newegg.com when purchasing memory cards. In Canada, use http://www.newegg.ca

http://www.amazon.com is usually a good bet, too. But, I'd be careful to only purchase directly from amazon.com versus one of the merchants listing items there (as I've seen supposedly reputable vendors with good customer feedback selling counterfeit cards on amazon).

JimC Jan 8, 2011 1:52 PM

Here's a good example of a counterfeit card that was listed by one of the merchants on Amazon.com.

http://www.amazon.com/gp/product/B002609TZY

I sent a note to Sandisk about it back in February 2010 when I noticed a vendor listing it on Amazon (since I suspected it was counterfeit), since Sandisk doesn't show any Extreme IV Pro HG Duo cards on their web sites.

Cristina Montero of Sandisk Technical Support confirmed that in writing (they don't make one like that), suggesting I report it to Amazon.

It's no longer available from the merchant that was listing it (and the merchant listing it had good customer feedback, too).

In that case, spotting it as a counterfeit was easy (since Sandisk doesn't even make an Extreme IV card in Memory Stick Pro Duo format).

But, in other cases, counterfeits can be hard to spot.

So, I'd stick to larger vendors with good reputations (for example, buying one directly from amazon.com versus a merchant listing items there).

Old Boy Jan 8, 2011 2:10 PM

Quote:

Originally Posted by JimC (Post 1187544)
There are many counterfeit cards being sold on Ebay, so I wouldn't buy mine there.

Personally, I stick to http://www.newegg.com when purchasing memory cards. In Canada, use http://www.newegg.ca

http://www.amazon.com is usually a good bet, too. But, I'd be careful to only purchase directly from amazon.com versus one of the merchants listing items there (as I've seen supposedly reputable vendors with good customer feedback selling counterfeit cards on amazon).


Hello JimC: (Administrator).

Canada Calling !

Are we allowed to post / recommend, web sites ?
http://www.newegg.com
http://www.newegg.ca

A.O.K. with me.
-- BUT --

http://www.amazon.com


Has many limitations for Canadian buyers..
Will "not" ship to Canada !
.
..

JimC Jan 8, 2011 2:54 PM

http://www.amazon.ca ships to Canada (they have different sites for different regions). ;-)

As for recommending vendors, it's probably not a good idea for a brand new member to do that, as you can probably tell (your last post was flagged for moderation by our Spam filter, so I had to approve it before it was visible).

That often happens (Spam filters flag posts for moderation) when a new member includes links in their posts (since more often than not, when a brand new member posts links to vendors, it's spam, where they're trying to promote a vendor for personal gain).

If a member is not associated with a vendor, we don't mind them posting links to one. But, if you are associated with a vendor, we consider it spam if you promote one (which will result in a ban, and we will also filter all links to the vendor being promoted in some cases to discourage repeat spam about the same vendor).

IOW, we do not allow our forums to be used for commercial purposes.

TCav Jun 7, 2012 6:58 AM

By the capacity:

shahidsaif Dec 31, 2012 9:37 AM

Quote:

Originally Posted by TCav (Post 1305538)
By the capacity:




please tell us about the latest web came i want buy the new web came.


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