I've decided after much delay that I am going to build a dual athlon system next, since I won't be buying an opteron/A64FX system for at least a year or so. However, I will be only doing so if I can do this reliably and with good performance using Athlon XPs, perhaps bartons. I do not want to spend the extra money on MP processors. I know some of you here have sucessfully used athlon XPs in SMP configurations. So... if you have, please, post what CPUs you used, what motherboard you used, what type/brand of RAM you used, and your relative satisfaction level / any difficulties / incompatibilities you may have encountered. So far, I'm looking at the following: * Tyan Tiger MPX (I actually would like a dual socket a board that supports 166/200mhz FSB if possible) * Dual 2200+/2400+ (If 133mhz FSB... I can always pin mod these) * Dual 2600+ Barton (If 166mhz FSB and board supports barton... I can get a good deal on these) * 1024mb PC2100/2700/3200 (Whatever the board will support) Anyways... please post your success/horror stories with dual athlon XPs here.