With CrystalDiskMark I have reached the following values:
Sequential Read: 68.88 MB / s | Letter: 18.19 MB / s
Random 512KB Read: 63.25 MB / s | Letter: 17.42 MB / s
Random 4KB (QD = 1) Read: 6.76 MB / s | Letter: 1.26 MB / s
Random 4KB (QD = 32) Read: 6.16 MB / s | Contact: 1,24MB / s
When you copy multiple files in Windows 8 I came to write rates 10 to 18 MB / s.
I am very happy and find the price of the card top. Would I buy again at any time.