32GB Micro SD HC Memory Card / Class 4

Its capacity is approx 29.8GB after FAT32 formatting.
I filled my card with data and then checked the integrity of the data and there were no errors, so that's good.
To write sequentially to the card until it was full took 2+ hours and averaged 3.25MBps which is slower than the class 4 MINIMUM of 4MBps. The read back averaged 14MBps.
The card performs better with files 50-100MBps and achieves the class 4 minimum near enough spot on.
If I were to say 3 stars would be "as described" with 4 being "better than expected" and 5 being "amazing". 1 star would be "useless" then the 2 star rating this gets should indicate that its not as good as it should be but it is "usable".

I've yet to try with any other file system.

Affordable and good spec (2010 Christmas present to self).

Note: I put the card into my phone FIRST so that it did it's setup initialisation on a blank card. Also used the phone USB connection to transfer data, took a while but all went okay. N.B. Android 2.1

32GB gives me lots of room for my music (I use WMA lossless compression and Meridian player). Why? The audio quality on the Xperia's DAC is actually very good (CD quality - yes, I measured it) and it makes a handy source of music for audio listening tests on HiFi systems.

100Hz = 0.014%
1KHz = 0.018%
10KHz = 0.012%

Frequency response (into 10K ohm) is ruler flat out to 22KHz.
Residual noise is 110dB down from peak out.

P.S. My SE MBW-200 watch started to work (with OpenWatch) as well with the new card installed. Unexpected bonus.

Early days as i've only recently got the card a day ago, but i've managed to copy over 30gb of music and everything works well.

In regards to the transfer speeds of this card, it really is a class 4, but the only way to achieve these speeds is not to use your phone but a memory card reader instead.

While transferring to my phone, i was getting 2mb transfer speeds (class 2), but in my memory card reader i got the full 4mb (class 4).

I suspect the reason why some people have reported getting 2mb speeds is because they were transferring over using their phone, this is a bad idea, not only because of the slow speeds but also because transferring huge amounts of data to a phone kills the battery possibly corrupting the data being transferred over when the phone dies mid transfer.

I own two of these cards and the tests I've done are clear that this is definitely a class 4 card. The write speed is 4.7MB/s and the read speed I get is 17MB/s and this is on both cards!
Much better value than other brands - Thanks Play!

Impressed to see a 32gb sdhc for this price, and usually play value items stand up pretty well. On this occassion I am dissapointed though - sold as a class 4 card which should guarantee a minimum 4MB/s writes. After thorough testing I barely get 3MB/s. When writing the full 32gb takes many hours to complete.

Read speeds are also extremely poor. Most sdhc cards read a lot faster than write. My 16gb Sandisk writes at 4MB/s but reads at 17MB/s. This one barely exceed 3.5MB/s.

Overall I will probably need to RMA this as really does not satisfy my needs (or meet the class 4 spec).

EDIT: Just a quick update (noting one of the comments about taking technology fro granted). With 28gb of space available and the 3 mb/s write speed it takes forever to write to the card. I normally test sd cards with H2testw - but I give up on testing this card after 6 hours

I ended up keeping this one - but will be replacing soon as the slow speed drives my nuts.

B