Compaq 470007-802 Deskpro EN Series of Personal Computers - Slim Desktop Model - Page 45

Installing Additional Memory, DIMMs, Memory Module Installation

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4.10 4.10.1 4.10.2 Installing Additional Memory The computer comes with synchronous dynamic random access memory (SDRAM) dual inline memory modules (DIMMs). DIMMs The memory sockets on the Intel 815e chipset-based system board can be populated with industry-standard DIMMs. These memory module slots are populated with at least one preinstalled memory module. To achieve the maximum memory support, you may be required to replace the preinstalled DIMM with a higher capacity DIMM. For proper system operation, the DIMMs must be industry-standard 168-pin, unbuffered PC100- or PC133- compliant SDRAM DIMMs, depending on the model. The SDRAM DIMMs must support CAS Latency 2 or 3 (CL = 2 or CL = 3). They must also contain the mandatory Joint Electronic Device Engineering Council (JEDEC) Serial Presence Detect (SPD) information. DIMMs constructed with x4 SDRAM (16 ICs per side) are not supported; the system will not start using unsupported DIMMs. The Intel 815e chipset supports both PC100 and PC133 SDRAM DIMMs. PC133 DIMMs should be used for optimal performance. If both PC100 and PC133 SDRAM DIMMs are installed in a computer, the system memory will run at the lower 100Mhz speed. Some configurations of PC133 SDRAMs may run at 100Mhz, instead of 133Mhz. Memory Module Installation CAUTION: Your memory module sockets have gold metal contacts. When upgrading your memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other. CAUTION: Static electricity can damage the electronic components of the computer or optional cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. Refer to Appendix F, "Electrostatic Discharge," for more information. CAUTION: When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module. 1. Prepare the computer for disassembly (Section 4.2). 2. Remove the access panel (Section 4.6) and locate the memory module sockets. ! WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to cool before touching. 4-12 Removal & Replacement Procedures

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4-12
Removal & Replacement Procedures
4.10
Installing Additional Memory
The computer comes with synchronous dynamic random access memory (SDRAM) dual
inline memory modules (DIMMs).
4.10.1
DIMMs
The memory sockets on the Intel 815e chipset–based system board can be populated with
industry-standard DIMMs. These memory module slots are populated with at least one
preinstalled memory module. To achieve the maximum memory support, you may be
required to replace the preinstalled DIMM with a higher capacity DIMM.
For proper system operation, the DIMMs must be industry-standard 168-pin, unbuffered
PC100– or PC133– compliant SDRAM DIMMs, depending on the model. The SDRAM
DIMMs must support CAS Latency 2 or 3 (CL = 2 or CL = 3). They must also contain the
mandatory Joint Electronic Device Engineering Council (JEDEC) Serial Presence Detect
(SPD) information. DIMMs constructed with x4 SDRAM (16 ICs per side) are not
supported; the system will not start using unsupported DIMMs.
The Intel 815e chipset supports both PC100 and PC133 SDRAM DIMMs. PC133 DIMMs
should be used for optimal performance. If both PC100 and PC133 SDRAM DIMMs are
installed in a computer, the system memory will run at the lower 100Mhz speed. Some
configurations of PC133 SDRAMs may run at 100Mhz, instead of 133Mhz.
4.10.2
Memory Module Installation
CAUTION:
Your memory module sockets have gold metal contacts. When upgrading your
memory, it is important to use memory modules with gold metal contacts to prevent corrosion
and/or oxidation resulting from having incompatible metals in contact with each other.
CAUTION:
Static electricity can damage the electronic components of the computer or optional
cards. Before beginning these procedures, ensure that you are discharged of static electricity by
briefly touching a grounded metal object. Refer to Appendix F, “Electrostatic Discharge,” for more
information.
CAUTION:
When handling a memory module, be careful not to touch any of the contacts. Doing so
may damage the module.
1.
Prepare the computer for disassembly (Section 4.2).
2.
Remove the access panel (Section 4.6) and locate the memory module sockets.
!
WARNING:
To reduce risk of personal injury from hot surfaces, allow the internal system
components to cool before touching.