BTW, this is what I would do instead of thinking about upgrading my current KT266A computer (I have actually 2 running ABIT KR7A-RAID, one as Win2k server, the other one is my XP Pro workstation, with similar hardware): put all the money I would spend for upgrading from KT266A to KT400 or whatever into a saving box but keep using my current ones. Wait 6 months, then ask myself "Do I want to upgrade now?" wait another 6 months then ask again. If I could resist the upgrade desire for about 12 months or longer, I could use the money to build a NEW computer, with new mobo, new memory, new CPU, everything new. The point I'm making is if you really want top performance, you need to think about upgrading other components as well, not only memory. You'd need a top CPU (currently AMD XP 2800+, or P4 3.06), top video card (ATI Radeon 9700 PRO or GeForce FX in February 2003), 512MB Corsair PC3500 C2, top mobo, big HDD with 8MB cache, etc... By the time you get everthing together, it will set you back 2k-3k easily. Do we have that much of money to spend? well some people do, but most of us don't. So you go figure...