1) Remove DLLs from memory

Windows keeps DLLs from programs that are shutdown in memory for a while. It´s a good idea to remove all DLLs from the system memory, when you close an application.

Launch "Regedit"
Open the following tree
HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > Current Version > Explorer

Move the mouse pointer to an empty space in the right window and right-click there. Click "New"and enter new String
"AlwaysUnloadDLL". Double click on this new string and enter value "1" (without quotes). Close Regedit and reboot PC in order to make this work.

2) Prevent windows from swapping its kernel / large system cache

Even with a lot of memory installed, Windows swaps its kernel onto the harddisk. Here´s how to keep the kernel in the
systems memory:

Launch "Regedit"
Open the following tree
HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > Session Manager > Memory Management

Search in the right window for an entry called
"DisablePagingExe".

Double click on this entry and change value to "1" (without quotes).

Seach in right window for an entry called
"LargeSystemCache"
and change the value to "1" (without quotes)