I'm running 212 x 19 at this moment and wanted to add HT as well. However CPU-z reports only 2 cores are in use if I turn on HT in bios. Anyone a clue what the reason could be? I thought it was just turn on the HT setting in bios but maybe I'm forgetting something.

Additionally (but in a different session) I wanted to try turn on some energy saving option. But which one should I use so my comp. won't run 100% when idle all night? Or should it be disabled when OC'ing at 4Ghz?