Desktop Boards
Intel® Desktop Board D865GRH
System Memory

Memory testing has been performed under the following category:

Advanced Tested Memory
Intel provides the Advanced environmental test procedures, test software and necessary hardware to an independent test lab to perform Advanced testing as requested by the memory vendors. Memory tested by Computer Memory Test Labs (CMTL*).

Intel Internal Tested Memory
Intel has a limited amount of memory tested for the desktop board. These part numbers may not be readily available throughout the product life cycle.

Intel Platform Memory Operations
Intel's platform memory organization works closely with several validation labs to assure design validation testing is in place for the major RDRAM silicon manufacturers.

System Memory Features

The Intel® Desktop Board D865GRH has four DIMM sockets and support the following memory features:

  • 2.6 V (only) 184-pin DDR 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
  • 4 GB maximum total system memory
  • Minimum total system memory: 64 MB
  • Non-ECC DIMMs
  • Serial presence detect
  • DDR400, DDR333, and DDR266 SDRAM DIMMs

The following table lists the supported system bus frequency and memory speed combinations.

To use this type of DIMM... The processor's system bus frequency must be...
DDR400 800 MHz
DDR333(Note) 800 or 533 MHz
DDR266 800, 533, or 400 MHz

Note: When using an 800 MHz system bus frequency processor, DDR333 memory is clocked at 320 MHz. This minimizes system latencies to optimize system throughput.

Note
  • Remove the AGP 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.

The following table lists the supported DIMM configurations.

DIMM Capacity Configuration DDR SDRAM Density DDR SDRAM Organization Front-side/Back-side Number of DDR SDRAM Devices
64 MB Single-sided 64 Mbit 8 M x 8/empty 8
64 MB Single-sided 128 Mbit 8 M x 16/empty 4
128 MB Double-sided 64 Mbit 8 M x 8/8 M x 8 16
128 MB Single-sided 128 Mbit 16 M x 8/empty 8
128 MB Single-sided 256 Mbit 16 M x 16/empty 4
256 MB Double-sided 128 Mbit 16 M x 8/16 M x 8 16
256 MB Single-sided 256 Mbit 32 M x 8/empty 8
256 MB Single-sided 512 Mbit 32 M x 16/empty 4
512 MB Double-sided 256 Mbit 32 M x 8/32 M x 8 16
512 MB Single-sided 512 Mbit 64 M x 8/empty 8
1024 MB Double-sided 512 Mbit 64 M x 8/64 M x 8 16


System Bus & Memory Speeds
The Intel® Desktop Board D865GRH supports three system bus speeds and three memory speeds. It is important to understand that not all system memory speeds are supported at all system bus speeds. In the table below, is a list of available system bus speeds and memory speeds capable.
System Bus Speed PC2100
266 MHz DDR SDRAM
PC2700
333 MHz DDR SDRAM
PC3200
400 MHz DDR SDRAM
800 MHz x x1 x
533 MHz x x x2
400 MHz x x3 x4

1 To minimize system latencies and optimize system performance 333 MHz DDR memory is clocked at 320 MHz when using an Intel® Processor with an 800 MHz system bus speed.

2 To minimize system latencies and optimize system performance 400 MHz DDR memory is clocked at 333 MHz when using an Intel Processor with a 533 MHz system bus speed.

3 To minimize system latencies and optimize system performance 333 MHz DDR memory is clocked at 266 MHz when using an Intel Processor with a 400 MHz system bus speed.

4 To minimize system latencies and optimize system performance 400 MHz DDR memory is clocked at 266 MHz when using an Intel Processor with a 400 MHz system bus speed.

This applies to:

Intel® Desktop Board D865GRH



Solution ID: CS-021827
Last Modified: 29-Sep-2014
Date Created: 20-Nov-2005
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