On Apr 2, 2009, at 2:45 PM, Gus Correa wrote:
Sorry, I don't have an answer about performance. You may need to ask somebody else or google around about the relative performance of 32-bit vs. 64-bit mode.
It is worth trying 64-bit. The performance is going to depend on the program. Since 64 bit pointers take more cache space, a program that uses a lot of pointers will run more slowly. However, the x64 architecture has more registers than the x86 architecture, and that can make a 64 bit program run faster. Overall, it is probably more common for program to run faster in 64 bit mode, but your program could be in the minority.
Iain
