Fast, cheap, defective

Especially high quality does not affect the 64GB SDXC Memory Card Save Tec, but for the price that's okay. The writing speed of about 45MB / s and 75MB / s read is good, even very good, but not constant.

But what brings me the card, if you (a full description and verify) the first test after a few GB errors result. Something like this is the worst-case scenario of a memory card manufacturer. I suppose then again a few more Euros in the hand and go for Sandisk.

Update:
I have the card now 6x tested with h2testw and Quick Disk Test. Of these, 4 tests successfully and there were two problems. I therefore made of the errors occur irregularly, that is for me not acceptable.