In order for your processor to perform under hyperthreading you will need to get 2.4c or above. Just because your mobo supports it doesnt mean the processor will perform ht. You will also have to take into account the o/s you are using. Not all will support HT. From what I was told and i could be wrong only Win2k pro and winxp pro are the only microsoft o/s that will support it. The o/s has to support dual processors for it to work.