I recently inherited an HP computer with a P4B-MX board that uses up to 3x1GB 168-pin SDRAM. It had one 256mb stick of memory, labeled as HP brand 1818-1851. When I tried to add an additional 256mb stick of SDRAM I had, it wouldn't play nice with it. What I did notice was that the HP stick is larger than all the other SDRAM modules that I have (taller? definitely a different size although the pin layout is the same). Is this a different kind of memory, or just HP being proprietary? When I took out the HP brand memory stick and put in 2 256mb sticks of my own SDRAM, the computer works fine and installed XP with no problem. What is it about this HP stick that makes it different?
Thanks
Thanks