Interesting point CrucialLabs. I was thinking about building a similar system, but I didn't know that about the RAM. Is it harmful for the system to use the PC 3200, or are you recommending PC 2700 simply because you would be paying for something you couldn't use with the PC 3200? I'm asking because I already have 512 MB of PC 3200 RAM with an XP 2500+.