HI! I am having Intel P-4 2.8 GHz processor WITH HT and Intel 865 mother-board. I am currently having 256 mb DDR ram. Now i want to upgrade it to 512 mb. I have two options; 1) Sell the current 256 mb ram and get a new single 512 ram. This will cost me 1600 Rs. 2) Get another 256 mb ram and make the total 512. This will cost me 1200-1300 Rs. Since the price margin is not much, i want to get best performance. Which way should i go?