Windows XP 32-bit or 64-bit

[Ghazan Haider]

This has been asked before, and the general consensus is that the
difference isnt big in performance. But It seems on one hand, that
64-bit apps REQUIRE 64-bit OS, like...

http://www.nzone.com/object/nzone_danceramd64_home.html

and on the other hand, the posts in the previous discussions imply
that you need 64-bit apps for the 64-bit windows. I also read about
WOW (windows on windows64bit) on Microsoft's site, which like 16bit to
32-bit WOW means slower performance, even though we're not talking
about itanium, we're talking about AMD64 and EMT64.

So.

(1) Can you run 32-bit apps in windows xp 64-bit as fast as you can in
windowsxp 32-bit on AMD64/EMT64 platforms?

(2) Are all 32-bit drivers usable on the 64bit windowsxp?

(3) Do all 64-bit apps REQUIRE a 64-bit OS? As in, if I compile an app
using visual C++ or pathscale compilers with the AMD64 target, can I
run it at all on my windowsxp professional running on Athlon64 2800?

 

[Paul Smith]

(1) Can you run 32-bit apps in windows xp 64-bit as fast as you can in
windowsxp 32-bit on AMD64/EMT64 platforms?

In my experience with the release candidates. Yes.

(2) Are all 32-bit drivers usable on the 64bit windowsxp?

No you'll need 64-bit drivers.

(3) Do all 64-bit apps REQUIRE a 64-bit OS? As in, if I compile an app
using visual C++ or pathscale compilers with the AMD64 target, can I
run it at all on my windowsxp professional running on Athlon64 2800?

Yes if you compile for x64 you'll need x64 Edition.

--
Paul Smith,
Yeovil, UK.
http://www.dasmirnov.net/
http://windows.dasmirnov.net/ Windows XP Resource Site.

*Replace nospam with smirnov to reply by e-mail*

 

[Miss Perspicacia Tick]

In my experience with the release candidates. Yes.


No you'll need 64-bit drivers.


Yes if you compile for x64 you'll need x64 Edition.

Hi, Paul, long time no 'speak'. How's life in the Cesspit of Somerset these
days...? I was down your way not so long ago, visiting my uncle and aunt
(and one cousin - the other was in Australia at the time - the usual thing
18-year-olds do in their gap year. Actually was more like a gap two years as
he was down there for the RWC - and the jammy git had tickets for the
final!) Next time I'm down that way, I'll come and bug the Hades out of you!
;o)