I recently got a "new" computer (an IBM NetVista x40 with an 800 MHz Pentium III, 128 MB SDRAM, a 20 GB SCSI HD), and I would like to upgrade the RAM. However, being a fuddy-duddy with RAM (and hardware in general), I'm not certain if I need to upgrade the RAM with more SDRAM or whether I can replace the 128 MB SDRAM with a corresponding size (i.e. same number of pins, etc.) DRAM chip?

I would like to get FreeBSD working on this baby, but without adequate RAM it'd be a nightmare using the Ports system.

So, to sum up, can I replace the SDRAM with DRAM? Or am I condemned to a life with SDRAM?