RAM : 4 memory banks (2 slots) using three 168-pin unbuffered DIMM. Single- or double-sided DIMMS with gold-plated contacts with clock specifications of 100 or 133 MHz. Supports a maximum memory size of 1 GB - 512 (128-bit technology) or 256 MB (64-bit technology) registered DIMMs. 1 GB unregistered DIMMS (256-bit technology) 3.3 V SDRAM DIMMs. ECC memory checking is not supported.