I noticed quake3 and UT ran smoother after i added another 128MB of ram. Also, when I have a lot of IE windows open, AIM, ICQ, Norton, and even sometimes....the TV tuner for my V3 3500TV on at the same time.....the computer doesn't slow down one bit. When i had 128 ......closing all those windows or switching sometimes made the computer access the hdd which slowed down the computer.....256 is nice to have....it just gives you more room to work with.