Windows XP x64 was blazing fast compared to XP x86 and Vista. I actually dual booted with XP x64 because of the issues and lack of polish with Vista. After SP1, I went fully over to Vista, but still enjoyed using XP x64. The only real issues with it was trying to get TES: Oblivion to run.
I was trying to suggest to the op to upgrade his machine and use XP x64 because he is probably still obsessed with using XP.
I won't deny it was fast, but it suffered from numerous compatibility issues, due to not actually being "XP" at its core. It was Server 2003 dressed up with the XP UI and most of the server components removed.
scared for whom? srsly
pae is automatically enabled on xp sp3 + x86_64 processors... this thread is about going beyond 4gb... where is the vast array of expertise when after 5 pages the subject of the thread is not even grasped.?
You're the one not grasping a lot of things.
1. If by some miracle you become capable of using more than 4 GB in Windows XP 32-bit, there will be literally no performance benefit. You're already wasting your relatively modern hardware by running that old eXPired OS.
2. Your perceptions of performance compared to more modern OS's is laughably wrong. 7 and 8 easily outperform XP on modern hardware. Why not simply install 7 or 8 x64 and install XP in a VM if you want to use it so much?