Dell OptiPlex GXi Service Manual (.pdf) - Page 39

Main Memory, System Board Jumpers, - memory upgrade

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Main Memory The four DIMM sockets on the system board can accommodate combinations of 8-, 16-, 32-, 64-, and 128-MB DIMMs up to a total memory capacity of 512 MB. Main memory can have either 72-bit parity (ECC) DIMMs or 64-bit nonparity DIMMs. The standard main memory is 16 MB of high-speed (60-ns) EDO-type memory with parity (ECC). The DIMMs can have different capacities, but must adhere to the following installation rules: • The memory can support any mixture of 8-, 16-, 32-, 64-, and 128-MB DIMMs. • The largest capacity DIMM must be in socket DIMM_A with decreasing capacities toward socket DIMM_D. • ECC function is enabled when all installed DIMMs are 72-bit parity DIMMs and the ECC category is set to On in the System Setup program. See the online System User's Guide or Chapter 6, "Installing System Board Options," in the Reference and Installation Guide for additional memory upgrade information. System Board Jumpers NICRST or jumpered unjumpered Figure 1-20. System Board Jumpers System Overview 1-21

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System Overview
1-21
Main Memory
The four DIMM sockets on the system board can accommodate combinations
of
8-, 16-, 32-, 64-, and 128-MB DIMMs up to a total memory capacity of
512 MB. Main memory can have either 72-bit parity (ECC) DIMMs or 64-bit
nonparity DIMMs. The standard main memory is 16 MB of high-speed (60-ns)
EDO-type memory with parity (ECC). The DIMMs can have different capaci-
ties, but must adhere to the following installation rules:
•
The memory can support any mixture of 8-, 16-, 32-, 64-, and 128-MB
DIMMs.
•
The largest capacity DIMM must be in socket DIMM_A with decreasing
capacities toward socket DIMM_D.
•
ECC function is enabled when all installed DIMMs are 72-bit parity
DIMMs and the ECC category is set to On in the System Setup program.
See the online
System User’s Guide
or Chapter 6, “Installing System Board
Options,” in the
Reference and Installation Guide
for additional memory
upgrade information.
System Board Jumpers
Figure 1-20.
System Board Jumpers
jumpered
unjumpered
NICRST
or