HP dx2390 Service Reference Guide: HP Compaq dx2390 Business PC - Page 41

Memory, In addition, the computer supports

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Memory The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2SDRAM) dual inline memory modules (DIMMs). The memory sockets on the system board can be populated with up to two 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 4 GB of memory configured in a highperforming dual channel mode. For proper system operation, the DDR2-SDRAM DIMMs must be: ● industry-standard 240-pin ● unbuffered, PC2-5300 667 MHz-compliant or PC2-6400 800 MHz-compliant ● 1.8 volt DDR2-SDRAM DIMMs The DDR2-SDRAM DIMMs must also: ● support CAS latency 5 DDR2 667 Mhz (5-5-5 timing), 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: ● 512Mbit and 1Gbit 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. There are two DIMM sockets on the system board, with one socket per channel. The sockets are labeled DIMM1 and DIMM2. Socket DIMM1 operates in memory channel A. Socket DIMM2 operates in memory channel B. Memory 35

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Memory
The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2-
SDRAM) dual inline memory modules (DIMMs).
The memory sockets on the system board can be populated with up to two 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 4 GB of memory configured in a high-
performing dual channel mode.
For proper system operation, the DDR2-SDRAM DIMMs must be:
●
industry-standard 240-pin
●
unbuffered, PC2-5300 667 MHz-compliant or PC2-6400 800 MHz-compliant
●
1.8 volt DDR2-SDRAM DIMMs
The DDR2-SDRAM DIMMs must also:
●
support CAS latency 5 DDR2 667 Mhz (5-5-5 timing), 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:
●
512Mbit and 1Gbit 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.
There are two DIMM sockets on the system board, with one socket per channel. The sockets are labeled
DIMM1 and DIMM2. Socket DIMM1 operates in memory channel A. Socket DIMM2 operates in memory
channel B.
Memory
35