PC机中的存储子系统：层次化 JSTC Graphics Co-Processor Frontside bus DRAM bus Backside bus AGP p2p CPU Off-Chip On-Chip Sys Mem Cache Cache/s Controllers DIMMs North Bridge SCSI bus PCI bus Hard SCSI Network Drive/s Controller Interface 1/O Keyboard Other Low-BW Controller 1/O Devices South Bridge Mouse FIGURE Ov.3:Typical PC organization.The memory subsystem is one part of a relatively complex whole.This figure illustrates a two-way multiprocessor,with each processor having its own dedicated off-chip cache.The parts most relevant to this text are shaded in grey:the CPU and its cache system,the system and memory controllers,the DIMMs and their component DRAMs,and the hard drive/s. Bruce Jacob,Memory Systems:Cache,DRAM,Disk,2008PC机中的存储子系统：层次化 Bruce Jacob，Memory Systems: Cache, DRAM, Disk，2008