[SEE: UltraDefrag Menu-bar: Help/Best Practice F2]
Performance Considerations
Before any disk defragmentation we recommend to disable the Windows paging file. It expands RAM, but works much slower. So, its removing will take much bigger effect on system performance than the disk defragmentation. If more RAM is needed than physically installed, setting up additional RAM modules always gives the best result.
If your computer has 1 GB of RAM or more, disabling the page file can speed up XP by allowing for faster memory management and access. The page file acts as virtual memory on your computer. Basically once the physical RAM is used up, Windows uses the hard drive for additional memory. Systems with under 1GB should not use this tweak … I am using 1 GB as a base guideline depending on your system and applications running results will vary.
Right click on My Computer Properties and click on the Advanced tab. Under performance click the settings button...
...in the Virtual Memory window click on No paging file then hit the Set button. You will then be prompted to reboot your computer for this tweak to take effect.
Click on this picture below to see what I decided is best with my Windows XP System.