268
Memory
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Be sure to install a single memory module in DIMM1, the connector closest to the processor, before
you install modules in the other connectors.
NOTE:
The ultra small form factor computer has only two slots which are considered an interleaved
pair. The mini tower, desktop, and small form factor computers have four slots.
Addressing Memory With 4-GB Configurations
This computer supports a maximum of 4 GB of memory when you use four 1-GB DIMMs or two 2-
GB DIMMs. Current operating systems, such as Microsoft
®
Windows
®
XP, can only use a maximum
of 4 GB of address space; however, the amount of memory available to the operating system is less
than 4 GB. 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
•
PCI Express cards (if applicable)
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).
B
A
Summary of Contents for GX620 - 3.6GHz Desktop 1GB RAM 80GB Windows XP SFF
Page 1: ...1 Dell OptiPlex GX620 User s Guide ...
Page 14: ...14 Contents ...
Page 22: ...22 Chassis Intrusion Switch w w w d e l l c o m s u p p o r t d e l l c o m Desktop Computer ...
Page 23: ...Chassis Intrusion Switch 23 Small Form Factor Computer ...
Page 27: ...27 Mini Tower Computer w w w d e l l c o m s u p p o r t d e l l c o m Back View 4 3 5 6 2 1 ...
Page 40: ...40 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 64: ...64 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 65: ...65 ...
Page 66: ...66 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 82: ...82 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 90: ...90 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 96: ...96 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 144: ...144 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 151: ...151 2 COM Black 3 5 VDC Red 4 COM Black 5 12 VDC Yellow Pin Number Signal name 18 AWG Wire ...
Page 152: ...152 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 170: ...170 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 196: ...196 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 212: ...212 Ultra Small Form Factor Computer w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 218: ...218 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 220: ...220 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 225: ...225 1 bottom of computer 2 device locking screw 1 2 ...
Page 226: ...226 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 238: ...238 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 255: ...Advanced Features 255 Small Form Computer Ultra Small Form Factor Computer ...
Page 262: ...262 Battery w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 274: ...274 Replacing the Computer Cover w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 302: ...302 Microsoft Windows XP Features w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 326: ...326 Troubleshooting Tools and Utilities w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 350: ...350 Warranty w w w d e l l c o m s u p p o r t d e l l c o m ...