技术发展趋势 Capacity Speed (latency) ogIC 2x in 3 years 2x in 3 years DRAM: 4x in 3 years 2x in 10 years Disk 4x in 3 years 2x in 10 years Year DRAMSize Cycle Time TUURTH 1980 →64Kb 2:1 250ns 1983 256Kb 220ns 1986 1 Mb 190ns 1989 4 Mb 165ns 1992 16 Mb 145ns 1995 64 Mb 120ns 20098192(8Gbi 2021-2-4 计算机体系结构技术发展趋势 Capacity Speed (latency) Logic: 2x in 3 years 2x in 3 years DRAM: 4x in 3 years 2x in 10 years Disk: 4x in 3 years 2x in 10 years 2021-2-4 计算机体系结构 4 Year DRAMSize Cycle Time 1980 64 Kb 250 ns 1983 256 Kb 220 ns 1986 1 Mb 190 ns 1989 4 Mb 165 ns 1992 16 Mb 145 ns 1995 64 Mb 120 ns 1000:1! 2:1! 2009 8192 (8 Gbi)