I have a friend that has an older desktop PC that uses DDR-400 (PC3200) 184-pin RAM, and only has 1 stick of 256 MB RAM in the system. I am looking for another stick of 256 MB or greater size. Since the system is a desktop, it must be non-ECC. Let me know if you have one you'd sell for $10 or less and are near the Beaverton area. For all DDR speeds: http://en.wikipedia.org/wiki/DDR_SDRAM I prefer PC3200 because the lowest common speed between all DIMMs is the speed that they all will be programmed to run at by BIOS, and I don't want to make my friend's system any slower.