I have 2 256mb sticks of pc3200 ddr ram right now, IF i add 1 more stick of 512pc 3200 ram( different brand) will I see a difference in Farcary and LO-MAC? ( soo total will be 2 256 sticks and 1 512 stick).
More memory always helps. If I was you, I would try to buy the same speed and brand as your 256 MB chips. It's a known fact that some memory doesn't play nice with other brands.