Originally posted by: her209
Originally posted by: kylef
Remember: Doubling the bits makes it twice as fast!
I hope you're being sarcastic.
I'll remember to be more obvious next time...
I'm actually running the Windows XP x64 RC2 on several different systems right now, and it works as advertised. I've been bitten by the
File System Redirector once in a Perl script, since Perl is a 32-bit app and is subject to the redirection.
Also, the speed improvement for native 64-bit apps seems to vary quite a bit from app to app. Not all apps will benefit to the same degree from a recompile with the extra 8 GPRs, which means the code size will increase for some apps more than for others. And other things being equal (using the same code and same compiler), code size is inversely proportional to speed since it uses up more instruction cache, takes longer to load, and triggers more page faults.
All in all, I'm impressed. Allowing 32-bit and 64-bit apps to run side-by-side is pretty darn cool.