Thats not true, a 32 bit application does not use "only 32 bits of the processor", it uses the same bits of the processor as a 64 bit application, in fact its the same processor. The difference is only that a 64 bit app accesses memory more effectively, thus runs up to 20% faster, and of course can allocate more memory. Drawback is that it wont run anymore under XP, Vista or any other 32 bit OS.