Cpu, Memory, And Motherboard; Cpu Daughter Board; Memory Modules; Memory Configuration Rules - Digital Equipment 3300R Service Manual

System Configuration and Setup

CPU, Memory, and Motherboard

Brief descriptions of the CPU daughter board, memory cards, and motherboard and its
connectors are provided in this section.

CPU Daughter Board

The CPU daughter board provides:
•
The Alpha 21164 microprocessor
•
Backup cache
•
ALCOR-2 chipset, which provides logic for external access to the cache for main
memory control, and the PCI bus interface
•
SROM code

Memory Modules

Server 3300/3300R system architecture supports from 32 Mbytes to 2 Gbytes of
DIGITAL
memory, although at product introduction, 1 Gbyte of memory is supported. Memory
options consist of four dual in-line memory modules (DIMMs) and are available in the
following variations:
•
32-Mbyte (consisting of four 8-Mbyte DIMMs)
•
64-Mbyte (consisting of four 16-Mbyte DIMMs)
•
128-Mbyte (consisting of four 32-Mbyte DIMMs)
•
256-Mbyte (consisting of four 64-Mbyte DIMMs)
•
512-Mbyte (consisting of four 128-Mbyte DIMMs)
•
1-Gbyte (consisting of four 256-Mbyte DIMMs)
The motherboard has eight DIMM connectors, grouped in two memory banks
(0 and 1). (See Figure 6-3.)

Memory Configuration Rules

Observe the following rules when configuring memory on
systems:
•
At least one memory bank must contain a memory option.
•
A memory option consists of four DIMMs (0, 1, 2, and 3).
•
All DIMMs in a bank must be of the same capacity and part number.
6–14 DIGITAL Server 3300/3300R
Server 3300/3300R
DIGITAL