The memory place lists these SIMMs. Spec Speed MB Price 72pin Parity 2x36 60 8 $23 4x36 60 16 $44 8x36 60 32 $87 So, I presume that if we have four open slots, we would be getting the 4x36 (16MB) SIMMs. (Of course, that also means that the SIMMs in each of the boxes are worth $176 retail.) dsc