The performance corresponds to the manufacturer's and thankfully also the other reviewers information.
I use the card in my camcorder Panasoic X909EG-S and am very happy with it.
Read: up to 45,5MB / s
Write: up to 33,6MB / s
The tests I did with Crystal Disc Mark 64-bit and my USB 3.0 card reader Kingston FCR-HS3.
So highly recommended if a sufficient speed.
(For a good DSLR with up to 90MB / s RAW images or videos for that is viiiiiel too slow.)