HP Compaq dx7300, Справочное руководство

Страница: 225 / 234

Service Reference Guide, dx7300 433611-001 F–1
F
Memory
The dx7300 and dc7700 series computers with Intel-based processors come with double data rate
2 synchronous dynamic random access memory (DDR2-SDRAM) dual inline memory modules
(DIMMs).
Ä
CAUTION:
DDR and DDR2 memory modules are not interchangeable.
DDR2-SDRAM DIMMs
The memory sockets on the system board can be populated with up to four industry-standard
DIMMs. These memory module sockets are populated with at least one preinstalled memory
module. To achieve the maximum memory support, you can populate the system board with up
to 8GB 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 PC2-4300 533 MHz-compliant, PC2-5300 667 MHz-compliant, or PC2-6400
800 MHz-compliant
■
1.8volt DDR2-SDRAM DIMMs
The DDR2-SDRAM DIMMs must also:
■
support CAS latency 4 (DDR2/533 MHz and DDR2/667 MHz) and CAS latency 5
(DDR2/667 MHz and DDR2/800 MHz)
■
contain the mandatory JEDEC SPD information
In addition, the computer supports:
■
256Mbit, 512Mbit, 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
✎
The system will not start if you install unsupported DIMMs.
DIMM Sockets
There are four DIMM sockets on the system board, with two sockets per channel. The sockets are
labeled XMM1, XMM2, XMM3, and XMM4. Sockets XMM1 and XMM2 operate in memory
channel A. Sockets XMM3 and XMM4 operate in memory channel B.