Hi together!

In the past I also upgraded my RAM to 4GB, with an ASUS P5WDH Deluxe. I think I had something like 3,2 GB RAM with 1 installed Graphics Card, and around 2,25 GB with another for Crossfire. It looks like the Graphics Card uses most of the RAM.
I first tested it with XP 32 bit. With the memory remapping-feature turned on it showed me the amount of available RAM during the boot process and the amount was the same in Windows.
With memory remapping turned off I got my 4096 MB in the Bios post, but Windows limited the memory to 2 GB.
I bought Ultimate x64 a few weeks ago and it all worked fine.
In our company we often sell Supermicro Servers with Windows Server 2003 installed. There I made my first experiences with addressing 4 GB RAM. While the X5 and X6 models often had problems with 4 GB, the X7 seem to work fine with the current bios-versions.
It seems to activate pae automatically, in the past we had to add it in the boot.ini.
I usually see pae activated on desktop pcs with Win XP as well, but we usually just install 2 GB there.

I read that each task cannot address more than 2 GB so it wouldn't run faster with more RAM, does anybody know anything about that?

I hope my english isn't that bad since it's not my native language.