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Product Description

1.7 System Memory

The Desktop Board D845EPI has two DIMM sockets and supports the following memory features:

• 2.5 V (only) 184-pin DDR SDRAM DIMMs with gold-plated contacts

• Unbuffered single-sided or double-sided DIMMs

• Maximum total system memory: 2 GB; minimum total system memory: 64 MB

• DDR333/266/200 MHz SDRAM DIMMs only

• Serial Presence Detect (SPD)

• Suspend to RAM

Table 4 lists the supported system bus frequency and memory speed combinations.

Table 4. Supported System Bus Frequency and Memory Speed Combinations

If the processor's system bus frequency is… You can use this type of DIMM…

533 MHz DDR333 or DDR266

400 MHz DDR266 or DDR200

CAUTION

Do not use ECC DIMMs with this board. Using ECC DIMMs could damage the board.

INTEGRATOR’S NOTES

• Registered DIMMs are not supported.

• Double-sided x16 DIMMs are not supported.

• If a full-length PCI add-in card is installed in PCI bus connector 1 (the PCI bus connector

closest to the processor), remove the add-in card before installing or upgrading memory to

avoid interference with the memory retention mechanism.

✏

NOTE

To be fully compliant with all applicable DDR SDRAM memory specifications, the board should be

populated with DIMMs that support the Serial Presence Detect (SPD) data structure. This allows

the BIOS to read the SPD data and program the chipset to accurately configure memory settings

for optimum performance.

For information about Refer to

Obtaining DDR SDRAM specifications Section 1.5, page 17

Obtaining the PC Serial Presence Detect (SPD) Specification Section 1.5, page 17

Intel D845EPI User Manual

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