Definitely both, lol. Get at least 4gb of DDR3(its relatively cheap). Depending on how much you would like to spend, med-high is definitely a possibility. What you need to check first is you motherboard. Judging by the low amount of memory, I can assume your set up is rather old. You are goin to want to make sure your board has a PCIe 16x slot and supports DDR3 RAM.