IBM 8687 Installation Guide - Page 22

CEC 1 CPU 1 CPU 2 CPU 3 CPU 4 IBM XA-32 core chipset 400 MHz 3.2 GBps 32 MB Processor & L4 cache 3.2 GBps cache controller SDRAM SDRAM SDRAM SDRAM 3.2 GBps 3.2 GBps Memory 3.2 controller GBps 100MHz 2 GBps 4-way interleave SMP Expansion Ports (3.2GBps) 2 GBps RXE Expansion Port A (1 GBps) PCI bridge 66 MHz 66 MHz 33 MHz Bus A PCI bridge B-100 C-133 D-133 Ultra160 SCSI Gigabit Ethernet Video USB Kbd/Ms RSA 64-bit 64-bit 64-bit 66 MHz 100 MHz 133 MHz Figure 1-4 xSeries 440 system block diagram - one SMP Expansion Module The component that contains the CPUs, processor/cache controller, memory controller, memory, and cache is called the SMP Expansion Module (or central electronics complex-CEC). The Xeon MP-based models of the x440 ship with one SMP Expansion Module with two or four CPUs and 2 GB or 4 GB of RAM. The Xeon DP-based models have either two CPUs in one SMP Expansion Module or four CPUs in two SMP Expansion Modules. Tip: The terms central electronics complex, CEC, and SMP Expansion Module are used interchangeably in relation to the x440. We use SMP Expansion Module in this redbook. 8 IBM ^ xSeries 440 Planning and Installation Guide