Quote Originally Posted by 'Sam DeathWalker',index.php?page=Thread&postID=171783#p ost171783
Probably a poorly written application may assume that there is less system ram then there is. Also under XP anyway a spicfic application cannot address mre then 2G I think it is. So even if the ram is available the programe cannot use it. 64 bit systems are better I am sure. but 32 bit OS its like 2G max for an application so ....
Seems to me that if a program thinks there's less RAM available, it's less likely to use additional RAM, not more likely, so it's less likely to cause paging.

Also about the 2 GB limit. It's actually not quite as limiting as it seems (because applications get a benefit from memory in the operating system's and device drivers' address spaces) but like every limit, it causes less RAM use, so it reduces paging.

I think 64 bit Windows is more likely to page than 32 bit Windows, not less, because 64 bit Windows uses more RAM due to the fact that every integer and pointer in the operating system requires 8 bytes of RAM instead of 4. (That's what 64 bit means -- it means those objects are 64 bits wide -- 8 bytes.)