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2
Hardware Installation
2.2.1 Important Installation Instructions
Certain rules must be followed when installing RIMM
to obtain
optimum system performance.
Rule 1: Before installing or uninstalling a RIMM, power off the system
and unplug the power cord. Make sure the Power/Standby
LED is off.
Rule 2: The four RIMM sockets are divided into 2 banks - bank 0
(RIMM sockets 1 and 2) and bank 1 (RIMM sockets 3 and
4). Bank 0 must be populated first ensuring that RIMM
sockets 1 and 2 are installed with RIMMs. The memory
configuration (speed, number of devices, size and density) of
RIMMs in bank 0 and bank 1 must be identical.
Rule 3: Each bank supports a maximum of 32 devices, therefore, the
2 banks support a maximum of 64 devices.
Rule 4: The system board supports ECC or non-ECC RIMM. Use
the same type of RIMM in all sockets.
Rule 5: Due to RDRAM’s signal routing, all RIMM sockets must be
populated with modules. If RIMM sockets 3 and 4 (bank 1)
are not populated with RIMMs, YOU MUST install them with
CRIMMs (Continuity RIMM). This is to avoid breaking the
signal lines which are a serial connection in a RAMBUS
interface and will allow the Direct Rambus Channel to
function properly. If, at any time, you wish to upgrade the
system memory, remove the CRIMMs and replace them with
RIMMs.
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