Yeah, that seems to be how SDRAMs work. They just run at the lowest supported speed when multiple modules are detected.

Just to make sure it is clear: PC66, PC100 and PC133 are all SDRAM. PC133 (not yet used on Macs) and PC100 SDRAM are backwards-compatible. "Standard" SDRAM is 66MHz (and is occasio…

Thanks tooki. That's what I thought originally when I posted this discussion. Anyway, I don't have to worry about it anymore cause my Pismo arrived today and I'll just put my new …