4 banks x 1M x 32bit Synchronous DRAM 4M x 32 SYNCHRONOUS DRAM, 6 ns, PDSO86 4 banks x 1M x 32bit Synchronous DRAM 4M x 32 SYNCHRONOUS DRAM, 5.5 ns, PDSO86 4 banks x 1M x 32bit Synchronous DRAM 4M x 32 SYNCHRONOUS DRAM, 4.5 ns, PDSO86 4 banks x 1M x 32bit Synchronous DRAM 4M x 32 SYNCHRONOUS DRAM, 5 ns, PDSO86