I'm not expert, but lately I have asked one in the shop where they build up computers PC. He says: Virtual memory your system decides ...you should not touch that...will do any good if you change to what you think best. So I didn't.

"'you shut up!  or I'll bring democracy to your country! "
Cris Galvão aka Softcris  - www.crisgalvao.com
(or softcris, SoftCris)
Rendering since 1997 and
at Renderosity since 1999.
OS Win 8.1     64 bit