Desktop Boards
Intel® Desktop Board D945GCCR
System Memory

Updated: January 4, 2007

System memory features
The board has two DIMM sockets and support the following memory features:

  • 1.8 V (only) DDR2 SDRAM DIMMs with gold-plated contacts.
  • Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMs with x16 organization are not supported.
  • 2 GB maximum total system memory.
  • Minimum total system memory: 128 MB.
  • Non-ECC DIMMs.
  • Serial Presence Detect.
  • DDR2 533 or DDR2 400 MHz SDRAM DIMMs.

Notes

  • Remove the PCI Express* x16 video 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. If non-SPD memory is installed, the BIOS will attempt to correctly configure the memory settings, but performance and reliability may be impacted or the DIMMs may not function under the determined frequency.

Supported DIMM configurations
The following table lists the supported DIMM configurations.

DIMM Capacity Configuration (Note) SDRAM Density SDRAM Organization Front-side/Back-side Number of SDRAM Devices
128 MB SS 256 Mbit 16 M x 16/empty 4
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
512 MB SS 1 Gbit 64 M x 16/empty 4
1024 MB DS 512 Mbit 64 M x 8/64 M x 8 16
1024 MB SS 1 Gbit 128 M x 8/empty 8

Note
In the second column, "DS" refers to double-sided memory modules (containing two rows of SDRAM) and "SS" refers to single-sided memory modules (containing one row of SDRAM).

Note
Regardless of the DIMM type used, the memory frequency will either be equal to or less than the processor system bus frequency. For example, if DDR2 400 memory is used with a 533 MHz system bus frequency processor, the memory will operate at 400 MHz. The table below lists the resulting operating memory frequencies based on the combination of DIMMs and processors.

DIMM Type Processor system bus frequency Resulting memory frequency
DDR2 400 533 MHz 400 MHz
DDR2 400 800 MHz 400 MHz
DDR2 533 533 MHz 533 MHz
DDR2 533 800 MHz 533 MHz

This applies to:

Intel® Desktop Board D945GCCR



Solution ID: CS-026627
Last Modified: 09-Oct-2014
Date Created: 24-May-2007
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