as with all new chips they will run existing stuff faster. When the new os and progs written for 64-bit turn up they will run faster than the old 32 bit ones run. As far as I am concerned my next pc will be a 64-bit or whatever is around when I decide to build it. My big proviso being the cost. If the 64-bit chip and mobo are the same price or cheaper than 32-bit then great but I will not pay a price penalty.