Desktop Boards
Intel® Desktop Board D845PEMY
System Memory

System memory features
The Desktop Board D845PEMY has two DIMM sockets and is designed to support up to 2 GB of single-channel DDR SDRAM memory. The board 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

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.

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.

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

Supported DIMM configurations

DIMM Capacity Configuration(Note) DDR SDRAM Density DDR SDRAM Organization Front-side/Back-side Number of DDR SDRAM Devices
64 MB SS 64 Mbit 8 M x 8/empty 8
64 MB SS 128 Mbit 8 M x 16/empty 4
128 MB DS 64 Mbit 8 M x 8/8 M x 8 16
128 MB SS 128 Mbit 16 M x 8/empty 8
128 MB SS 256 Mbit 16 M x 16/empty 4
256 MB DS 128 Mbit 16 M x 8/16 M x 8 16
256 MB SS 256 Mbit 32 M x 8/empty 8
256 MB SS 512 Mbit 32 M x 16/empty 4
512 MB DS 256 Mbit 32 M x 8/32 M x 8 16
512 MB SS 512 Mbit 64 M x 8/empty 8
1024 MB DS 512 Mbit 64 M x 8/64 M x 8 16

In this column, “DS“ refers to double-sided memory modules (containing DDR SDRAM devices on both sides) and “SS“ refers to single-sided memory modules (containing DDR SDRAM devices on only one side).

Updated: August 23, 2004

This applies to:

Intel® Desktop Board D845PEMY

Solution ID: CS-027112
Last Modified: 13-Oct-2014
Date Created: 14-Jun-2007
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