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Hardware Installation
2.2 System Memory
The two 184-pin SRIMM sockets on the system board uses RIMM
TM
modules for memory expansion. A RIMM
TM
module may come with
4, 8, 12, 16 or more devices. A device refers to 1 RDRAM chip. In
other words, a module with 8 devices means the module has 8
RDRAM (Rambus Dynamic RAM) chips on it. A device provides
1.6GB/sec bandwidth which is several times the bandwidth available
from a SDRAM. An example of a RIMM
TM
module with 8 devices is
shown below.
Warning:
Electrostatic discharge (ESD) can damage your system board,
processor, disk drives, add-in boards, and other components. Perform
the upgrade instruction procedures described at an ESD workstation
only. If such a station is not available, you can provide some ESD
protection by wearing an antistatic wrist strap and attaching it to a
metal part of the system chassis. If a wrist strap is unavailable,
establish and maintain contact with the system chassis throughout
any procedures requiring ESD protection.
When you purchase a RIMM
TM
module, the devices on the module
are not visible unlike the one shown above. This is because the
module has already been packaged with a heatsink. Make sure you
know the number of devices and the RDRAM technology used
when you purchase the module because these information are
important when you configure your system memory. Please read the
following sections carefully.