Now I have tested it:
Software: H2testw 1.4
PC: Intel Core2Quad @ 2.33GHz with 8GB of RAM and Windows 7 64bit
Reader: Tchibo cheap card reader, about 1 year old.
Result:
Writing with 16.3 MB / s
Read with 19.1 MB / s
No errors found
A great result with which I am very satisfied.
Edit: The review refers to the 8GByte card, even if the Amazon tag says otherwise.