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Upgrading and Servicing 193
Adding Memory
The motherboard contains sockets for either DIMMs
(dual in-line memory modules) or DDR (double
data rate) DIMMs, depending on which PC model
you have.
To determine which type of memory module your
PC uses, go to the HP Web site by typing
http://www.hp.com into your Web browser
address box and pressing Enter on your keyboard.
Click the support link. Search for your PC model
number, and then search for upgrading memory to
find out your system configuration and memory
requirements.
The motherboard contains 168-pin DIMM sockets or
184-pin DDR DIMM sockets. The exact number of
sockets depends on which model you have.
DIMMs
DIMMs must be 168-pin unbuffered SDRAM
(synchronous dynamic random access memory),
compliant with the Intel
®
PC SDRAM Unbuffered
DIMM Specification. The PC comes with one or
more memory modules, but you can replace existing
memory modules with higher capacity ones. You
can install 64-MB, 128-MB, 256-MB, or 512-MB
memory modules in the PC.
DDR DIMMs
DDR DIMMs must be 184-pin unbuffered DDR
SDRAM. The PC comes with one or more memory
modules, but you can replace existing memory
modules with higher capacity ones. You can install
64-MB, 128-MB, 256-MB, or 512-MB memory
modules in the PC.
w
Using the wrong type
of memory module
could damage the PC.
DIMM
DDR DIMM
n
256-MB memory
configurations vary
depending on your
computer model.
256-MB and 512-MB
DIMM memory
modules are not
compatible with all
computer models.