Microprocessor-DRAM性能差异 ·利用 caches缓解微处理器与存储器性能上的差异 Microprocessor-DRAM性能差异 time of a full cache miss in instructions executed 1st Alpha 340 ns / 5.0 ns=68 clks x 2 or 136 instructions 2nd alpha 266ns/3.3 ns=80 clks x 4 or 320 instructions 3rd alpha 180 ns/1.7 ns =108 clks x 6 or 648 instructions 2021/2/4 计算机体系结构Microprocessor-DRAM性能差异 • 利用caches缓解微处理器与存储器性能上的差异 • Microprocessor-DRAM 性能差异 • time of a full cache miss in instructions executed 1st Alpha : 340 ns/5.0 ns = 68 clks x 2 or 136 instructions 2nd Alpha : 266 ns/3.3 ns = 80 clks x 4 or 320 instructions 3rd Alpha : 180 ns/1.7 ns =108 clks x 6 or 648 instructions 2021/2/4 计算机体系结构 6