Yes, I am using the beta version of Windows XP 2003 64bit, available for 
free from Microsoft to anyone willing to download it (or pay a small fee 
to recieve it on CD).

From what I've heard on the WindowsXP64 board, compiling with the 
optimizations intended for 64bit, or possibly for the AMD64 particularly, 
will increase program execution speed dramatically.  That's what I 
expect, along with a better/faster/more efficient numerical precision 
when using really small, or really large, parameters in object size, 
placement, etc.

I am a web developer using c# and asp...  I don't know much at all about 
compiler optimizations other than what I've read.  What's being written 
is that a program compiled to 32bit will run at simliar speeds on an AMD 
XP and an AMD64 rated similarly.  When that same program is compiled to 
64bit, using the optimizations intended for 64bit, the program will run 
significantly faster on the 64bit processor (and not at all on the 32bit 
processor).

If I'm wrong, then so are a lot of developers posting on the WindowsXP64 
board.  <shrug>  I'm already getting a big boost over the Athlon XP 1800+ 
I was running POV on before, so I'm very satisfied with my upgrade.  If 
there's even a slight possiblity that compiling with 64bit optimizations 
will result in faster code execution, why wouldn't I want to try it?

As soon as .Net is able to be run on Windows XP 64bit, I'd be willing to 
attempt the compile myself (hopefully with help from this group! :).  If 
there's a freeware compiler that can do 64bit executables on Windows XP 
64bit, I'd be willing to try that route also.

Rich

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