Before You Begin; Adding Memory - Intergraph StudioZ GT RAX System Reference Manual

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Before You Begin

WARNING Disconnect the system and peripheral devices from AC power before servicing
internal components! Failure to remove AC power may result in equipment
damage or personal injury. The GT RAX system is always on when connected
to AC power.
WARNING Follow all warnings and cautions in the servicing instructions. If you fail to
follow documented procedures, personal injury and damage to equipment can
result.
CAUTION Use an antistatic wrist strap for all upgrading procedures to avoid the possibility of
electrostatic discharge.
CAUTION Do not overtighten screws and other fasteners to avoid damaging threads.
CAUTION Follow all warnings and cautions in these upgrade instructions. If you fail to follow
documented, approved procedures, personal injury or damage to equipment can
result.
See Chapter 1, "Accessing the Components," for details on opening the system and protecting
against electrostatic discharge. These procedures assume you have removed the cover from the
system. "Right side" and "left side" are as seen from the front of the unit. After upgrading the
system, replace panels as described in Chapter 1, "Accessing the Components."

Adding Memory

You can add system memory to the computer by adding or replacing dual inline memory modules
(DIMMs). The system board has six DIMM sockets, which combined can hold up to 3 GB of
Synchronous Dynamic Random-Access Memory (SDRAM).
CAUTION System memory modules from Intergraph Computer Systems are certified for use
with Intergraph computers at extremes of temperatures and system load to ensure
reliable performance. System memory modules available from other vendors may
not function properly or reliably in your Intergraph computer.
Follow these population rules to correctly install the DIMMs:
Install DIMMs one bank at a time.
The system board has two memory controllers. The primary controller maintains DIMM
banks 0, 2, and 4. The secondary controller maintains DIMM banks 1, 3, and 5.
If you are installing both unbuffered and registered DIMMs, you must install all of the
unbuffered DIMMs in the banks controlled by one memory controller, and all of the registered
DIMMs in the banks controlled by the other memory controller.