Dell OptiPlex 745 User Manual

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 Memory
Dell™OptiPlex™745User'sGuide
DDR2 Memory Overview
Addressing Memory With 4-GB or Greater Configurations (32-bit Operating Systems Only)
Removing Memory
Installing Memory
Your computer supports non-ECC DDR2 memory only. For more information on the type of memory supported by your computer, see the "Memory" section of
the specifications for your computer:
l Mini Tower Computer Specifications
l Desktop Computer Specifications
l Small Form Factor Computer Specifications
l Ultra Small Form Factor Computer Specifications
DDR2 Memory Overview
Dual-channel DDR2 memory modules should be installed in pairs of matched memory size. If the DDR2 memory modules are not installed with the same amount
of memory in each channel, the computer will continue to operate, but with a slight reduction in performance. See the label in the upper-right corner of the
module to determine the module's capacity.
The recommended memory configurations are:
l A pair of matched memory modules installed in connectors DIMM1 and DIMM2
or
l A memory module installed in connector DIMM1
or
l For the mini tower, desktop, and small form factor computers only, 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 processor, before you install modules in the other connectors.

Mini Tower, Desktop, and Small Form Factor Matched Pairs
NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at
support.dell.com.
NOTE: Memory purchased from Dell is covered under your computer warranty.
NOTICE: Do not install ECC memory modules. Doing so may cause the system not to boot or otherwise impact performance.
NOTE: Always install DDR2 memory modules in the order indicated on the system board.
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.

Dell OptiPlex 745 Specifications

General

Chipset	Intel Q965 Express
Memory	Up to 8GB DDR2 SDRAM
Form Factor	Mini Tower, Desktop, Small Form Factor, Ultra Small Form Factor
Audio	Integrated High Definition Audio
Power Supply	305W (Mini Tower)
Processor	Intel Core 2 Duo, Pentium D
Graphics	Integrated Intel Graphics Media Accelerator 3000
Networking	Integrated Gigabit Ethernet
Expansion Slots	2 PCI, 1 PCIe x16, 1 PCIe x1
Ports	USB 2.0, Serial, Parallel, RJ-45, Audio jacks
Operating System	Windows XP, Windows Vista
Optical Drive	DVD-ROM, DVD+/-RW