RIMM

Rambus In-Line Memory Module: This is the form factor for Rambus RDRAM. By comparison, SDRAM is mainly found on DIMM’s, and EDO RAM is usually on SIMMs. RIMM’s require that if you don not fill all RIM slots with RDRAM memory, you must keep the empty slots filled with termination boards to ensure that the high speed Rambus memory signals do not bounce improperly.