By adding something like the Zotac Nvidia Geforce GT 520, It has 1 gig of gddr3 VRam and also has over clocking software that's really nice if you need it. It has really improved my performance. Since it has taken a lot of work off the cpu, Plus I paid around $40 U.S. for it. It's a simple card but works well, I've never regretted the purchase.
I failed to mention that you'll immediately notice better resolutions in video play back such as YouTube and other streaming videos, Not to mention they will stream faster, Also the $40 I payed was several months ago, They may be cheaper by now or you may find a faster card in the same price range.