Removal And Replacement Procedures Expansion Cards And Memory; Memory Expansion; 1Hp Workstation Xw4000 Ddr Memory - HP xw4000 Service & Reference Manual

Removal and Replacement Procedures
For an overview of the different chassis discussed in this chapter, refer to Chapter 6 "Identifying
the Chassis, Routine Care, and Disassembly Preparation."
Ä CAUTION: .Voltage is always applied to the system board when the system is plugged into an AC
power source. You must disconnect the power cord from the power source before opening the
computer to prevent system board or component damage.

11.1 Memory Expansion

11.1.1 hp workstation xw4000 DDR Memory
The hp workstation xw4000 DDR system features an Intel 845E-based system board that
includes two memory sockets that accept industry-standard double-data rate (DDR) SDRAM
DIMMs. The two 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 184-pin, unbuffered
PC2100- compliant DDR DIMMs. The DIMMs must support CAS Latency 2 or 2.5 (CL = 2 or
CL = 2.5). 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 845E chipset supports both PC1600 and PC2100 DDR DIMMs. These systems are
shipped with PC2100 DDR DIMMs, which provide optimal (266-MHz) performance. If both
PC1600 and PC2100 DDR DIMMs are installed in a computer, the system memory will run at
the lower (200-MHz) speed.
The Intel 845E chipset-based systems ship with non-ECC memory, but will support ECC
memory. To utilize ECC functionality all installed DIMMs must be ECC types. Mixing ECC and
non-ECC DIMMs is not supported.
CAUTION: Memory module sockets have gold metal contacts. When upgrading the memory, it is
Ä
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.
Service Reference Guide
Expansion Cards and Memory
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