IBM 440 - Manual (Page 22)

8 IBM ^ xSeries 440 Planning and Installation Guide
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.
Ultra160
SCSI
Gigabit
Ethernet
Video
USB
Kbd/Ms
RSA
33 MHz 66 MHz
64-bit
66 MHz
64-bit
100 MHz
64-bit
133 MHz
Bus A 66 MHz
RXE
Expansion
Port A
(1 GBps)
B-100 D-133 C-133
IBM XA-32
core chipset
CEC 1
SMP Expansion
Ports (3.2GBps)
2 GBps
PCI bridge PCI bridge
SDRAM
3.2 GBps
32 MB
L4 cache
CPU 1 CPU 2 CPU 3 CPU 4
400 MHz
SDRAM
3.2 GBps
3.2 GBps
Processor &
cache controller
2 GBps
3.2 GBps
3.2
GBps
SDRAM
SDRAM 100MHz
4-way
interleave
Memory
controller