Yes, when you want to really use an APU (or SandyBridge, IvyBridge or Haswell with HD graphics) for e.g. BOINC you are better off with faster RAM (=more bandwidth).
Yes, when you want to really use an APU (or SandyBridge, IvyBridge or Haswell with HD graphics) for e.g. BOINC you are better off with faster RAM (=more bandwidth).