I'm buying me a AMD Athlon XP 2800 or 2700 (depending on price difference) and a A7N8X nForce2 mobo for Christmas Anyway I already have 2 512 sticks of PC2100 DDR. I heard with Dual DDR333 or DDR 400 CL 2.0 PC3200 the CPU will beatout the P4 2.8 GHz. You guys think I would notice a big difference in the two? I'm not sure how much 2 512 sticks of DDR 400 would be but I have a feeling it would be alot and I'm cutting it close already. And does Dual DDR just mean 2 sticks or is that something new as well? Anyway, thanks for the help! I always get good info on this board.