I'm not overclocking, and I don't know of this "pagefile" thing, so I can't answer that. However I can tell you that with the amount of programs I tend to run at one time, my RAM reaches in the 90+ percents. Especially when watching a Blu-Ray movie with Cyberlink's PowerDVD Ultra 10 software.
and overtime, even if I am not running anything, my memory gradually decreases cause I always have my computer running. After a reboot, my RAM is running at 23% give or take with no apps, and after a couple days..it runs in the 50 Percents, with no apps running.
@jdcrispe95
The RAM kit you linked was actually one of the 2 kits I was looking at.
Anyway, um..my question still hasn't really been answered yet. I still need to know what to look for in RAM and to know why.