HP Compaq Business Desktop dx2000 Technical Information download pdf (Page 101)

Service Reference Guide, dx2000 uT 359782-002 E–1

Memory

Computers equipped with Intel-based processors come with double data rate synchronous

dynamic random access memory (DDR-SDRAM) dual inline memory modules (DIMMs).

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

DIMMs. These memory module slots are populated with at least one preinstalled memory

module. To achieve the maximum memory support, you can populate the system board with up

to 4GB of memory configured in a high-performing dual channel mode.

For proper system operation, if the computer supports DDR-SDRAM DIMMs, the DIMMs must

be industry-standard 184-pin, unbuffered PC2700 333 MHz- or PC3200 400 MHz-compliant,

2.5 volt DDR-SDRAM DIMMs. The DDR-SDRAM DIMMs must also:

■ support CAS latency 2.5 or 3 (CL = 2.5 or CL=3)

■ contain the mandatory JEDEC SPD information

In addition, the computer supports:

■ 128Mbit, 256Mbit, and 512Mbit 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

The following processor bus frequencies are required for the system to run at the supported

memory frequencies.

If a memory frequency is paired with an unsupported processor bus frequency, the system will

run at the highest supported memory speed. For example, if a 333 MHz DIMM is paired with a

400 MHz processor bus, the system will run at 266 MHz, the highest supported memory speed.

✎

The system will not start if you install unsupported DIMMs.

Memory Frequency Required Processor Bus Frequency

266 MHz 400 MHz, 533 MHz, or 800 MHz

333 MHz 533 MHz or 800 MHz

400 MHz 800 MHz

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HP Compaq Business Desktop dx2000 Technical Information Page 101