DELL INSPIRON N5050 GRAPHIC ISSUE

HI, IS THERE ANY WAY TO ALLOCATE VIDEO MEMORY FROM MY RAM?
THIS IS MY SPECS

DELL INSPIRON N5050
MODEL # : HWTBHR1
INTEL® CELERON® CPU B710
INTEL® HD GRAPHICS
TOTAL MEMORY: 783 MB SHARED: 64MB


I JUST WANT TO INCREASE THE GRAPHIC PERFORMANCE IN COMPUTER GAMES..
BUT THE BIOS DOESNT HAVE ANY OPTION TO ADJUST VISUAL PERFORMANCE.. PLEASE HELP..