Service Reference Guide, dC7100 361288-003 F–1
F
Memory
Intel-Based Systems
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 three or four
industry-standard DIMMs depending on the model. 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:
â– support CAS latency 2.5 or 3 (CL = 2.5 OR CL=3)
â– contain the mandatory JEDEC SPD information
In addition, the computer supports:
â– 256Mbit, 512Mbit, AND 1 gBIT non-ECC memory technologies
â– single-sided and double-sided DIMMS
â– 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 400 MHz DIMM is paired with a
533 MHz processor bus, the system will run at 400 MHz, the highest supported memory speed.
✎
The system will not start if you install unsupported DIMMs.
Memory Frequency Required Processor Bus Frequency
333 MHz 533 MHz or 800 MHz
400 MHz 800 MHz
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