I ordered the memory and sent back. Either both memory modules were defective or the memory is not compatible with current AMD APUs / chipsets. (Installed was a AMD A8 3870K APU Gigabyte GA-A75M-in D2H Board)
A quote from the article description of the same items at Amazon UK:
"Designed and programmed Specially for Intel Sandy Bridge platforms supporting LGA 1156, LGA 1366 processors"