Read: 87.4 to 88.2 MB / s
Letter: measured with a 1200MB file because HD Tune has since unfortunately spat no values
fluctuated between 36 - 41 MB / s
The card is from me in the DSLR - used Canon EOS 100D and running there absolutely perfect, both in image and video mode, the buffer in the device is hardly needed as the write speed is just right.
I am not to have bought a ticket for the double definitely glad'll report in 6 and again in 12 months and edit in here if the card still reliably performs its service. Will be from now just used regularly.
From me so far but a strong buy recommendation, good does not have to be necessarily expensive flat. Usually you also pay the names, and who knows what memory chipmaker plugged inside of this card)