Hi,
FYI, SanDisk did not launch any microSD Ultra in 32GB format. If you bought the microSD “standar” Class-4 your results are ok, look to the write speed, 4.739 MB/s, if the card is a standar class-4 it´s normal.
The former SanDisk microSD Ultra were class-4 and capacities from 4 to 16GB, the 32GB version never was lauched in the class-4 format.
SanDisk has launched the new microSD HC Ultra “bi-colored” card in 4,8,16,32 in UHS-1 / Class-6 format and 64GB in the SDXC format. These new models are class-6 and USH-1 enabled , according the SanDisk specs these new microSD Ultra cards will achieve up to 30MB/s in read speed. I suppose this new “bi-colored” ultra cards will get 10-15MB/s in write speed as well.
We have received the microSD Ultra Class-6 (30MB/s) in 8GB and 16GB, the 32GB version will arrive by mid Dec. 2011 .We will make a video and benchmarking test of these new cards shortly using the new Imagemate USB 3.0
You can see the SanDisk presentation video of these new cards:
