Addressing Memory With 4-Gb Or Greater Configurations (32-Bit Operating Systems Only) - Dell bpcwcsn_5 - OptiPlex - 740 User Manual

• A pair of matched memory modules installed in connectors DIMM1 and DIMM2 and another
matched pair installed in connectors DIMM3 and DIMM4
Be sure to install a single memory module in DIMM1, the connector closest to the edge of the system
board, before you install modules in the other connectors.
Mini Tower, Desktop, and Small Form Factor Matched Pairs
Addressing Memory With 4-GB or Greater Configurations (32-bit
Operating Systems Only)
This computer supports a maximum of 8 GB of memory. Current 32-bit operating systems, such as
®
Microsoft Windows
memory available to the operating system is less than that installed. Certain components within the
computer require address space in the 4-GB range. Any address space reserved for these components
cannot be used by computer memory.
The following components require memory address space:
• System ROM
• APIC(s)
• Integrated PCI devices, such as network connectors and SCSI controllers
• PCI cards
• Graphics card(s)
• PCI Express cards (if applicable)
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Memory
B
A
A
matched pair of memory modules in connectors DIMM1 and
DIMM2 (white securing clips)
B
matched pair of memory modules in connectors DIMM3 and
DIMM4 (black securing clips).
®
XP , can use a maximum of 4 GB of address space; however, the amount of