Well, most games take less than three cores, so no. HyperThreading actually slows down some games, something related to the extra thread having to calculate stuff that it doesn't need to, probably an example of this is where the Core i7 loses to the Phenom II X4. Also, applications that aren't programmed to take advantage of HyperThreading, well, don't take advantage of the extra threads, and most if not all games don't take advantage of HT.