HP Compaq dc7900 SFF User's Guide download pdf (Page 24)

Installing Additional Memory

The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2-

SDRAM) dual inline memory modules (DIMMs).

DIMMs

The memory sockets on the system board can be populated with up to four industry-standard DIMMs.

These memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum

memory support, you can populate the system board with up to 16-GB of memory configured in a high-

performing dual channel mode.

DDR2-SDRAM DIMMs

For proper system operation, the DDR2-SDRAM DIMMs must be:

●

industry-standard 240-pin

●

unbuffered PC2-6400 800 MHz-compliant

●

1.8 volt DDR2-SDRAM DIMMs

The DDR2-SDRAM DIMMs must also:

●

support CAS latency 5 DDR2 800 Mhz (5-5-5 timing) and CAS latency 6 DDR2 800 Mhz (6-6-6

timing)

●

contain the mandatory JEDEC SPD information

In addition, the computer supports:

●

512-Mbit and 1-Gbit non-ECC memory technologies

●

single-sided and double-sided DIMMs

●

DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM are not

supported

NOTE: The system will not operate properly if you install unsupported DIMMs.

18 Chapter 2 Hardware Upgrades ENWW

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HP Compaq dc7900 SFF User's Guide Page 24