Charlie
Tue Sep 27 23:54:52 CDT 2005
This isn't really a programmer's group, but I can answer your questions in a
general way.
Will there be a difference in performance between a 64bit and a 32bit
program? Will depend on the program, but generally yes. The x64 processor is
more efficient, has more (and larger) registers, and uses a different
floating point set of registers and instructions entirely. Plus, of course,
the ability to directly address 8 TB of virtual memory address space. Even
for programs that aren't memory address constrained, the new and wider
registers can make a dramatic difference in some applications. For example,
take a look at:
http://www.cakewalk.com/x64/whitepaper.asp
--
Charlie.
http://msmvps.com/xperts64
Echevil wrote:
> is a program supposed to run faster when it is built for x64 system?
>
> i can configure my visual studio to build programs targeting 64bit
> windows, but if i do not write any code different from those in 32bit
> program, is there supposed to be any difference in performance?
>
> and also, what benefits do developers get? 64bit integer? any
> differences in float point computation?