1 MEG x 4 DRAM Fast Page Mode DRAM 1M X 4 FAST PAGE DRAM, 120 ns, CDSO20 1 MEG x 4 DRAM Fast Page Mode DRAM 1M X 4 FAST PAGE DRAM, 70 ns, CDSO20 1 MEG x 4 DRAM Fast Page Mode DRAM 1M X 4 FAST PAGE DRAM, 70 ns, CDIP20 1 MEG x 4 DRAM Fast Page Mode DRAM 1M X 4 FAST PAGE DRAM, 120 ns, CZIP20