I have a dual 450. I put in memory one stick at a time. -Drew On Friday, June 27, 2003, at 03:24 PM, Mark.Florida wrote: > Actually, I think only the dual processor systems require a "dual" > memory configuration -- I'm not entirely sure why, but I think it has > something to do with the way they address the memory. Single > processor systems can get by with just a single stick of RAM, but the > duallies each need their own (but I'm sure they share it somehow...) - Andrew T. Lynch - Chief Zymurgist/Manager US Technical Services - Verisity Design Inc. - (650)934-6875