memory card class 4

hels · June 17th, 2012, 04:39 PM

Hi all i am wanting to get a 32gb memory card for my arc and also my fella's xperia play. Ive found some on ebay but they are coming up with class 4 on them. What does this mean? I noticed on my 8gb in phone says class 2 . Is this class bit important?

Thanks in advance for any help

brit9 · June 18th, 2012, 10:01 AM

Hi Hels
Here's what a Google search of "memory card class definition" reveals:

Secure Digital - Wikipedia, the free encyclopedia

Quote:

Speed Class Rating

The SD Association defines standard speed classes indicating minimum performance to record video. These are defined in terms of suitability for different applications:

Class 2 for SD video recording (2 MB/sec)
Class 4 and 6 for HD ~ Full HD video recording (class 4: 4 MB/sec, class 6: 6 MB/sec)
Class 10 for Full HD video recording and HD still consecutive recording (10 MB/sec)
UHS Speed Class 1 for real-time broadcasts and large-size HD videos

The specification defines these classes in terms of performance curves which translate into the following minimum performance levels (on an empty card)

Cheers
Brit

sdrawkcab25 · August 24th, 2012, 06:42 PM

Quote:

Originally Posted by hels

Hi all i am wanting to get a 32gb memory card for my arc and also my fella's xperia play. Ive found some on ebay but they are coming up with class 4 on them. What does this mean? I noticed on my 8gb in phone says class 2 . Is this class bit important?

Thanks in advance for any help

The higher the class... the higher the read/write speed... anything class 4 and above is sufficient.

Edit: just realized this is an old thread..