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System Memory Features
The Intel® Desktop Board D875PBZ has four DIMM sockets and supports 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
- ECC and non-ECC DIMMs supported
- Serial Presence Detect
- DDR400 and DDR333 SDRAM DIMMs
The following table lists the supported system bus frequency and memory speed combinations.
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To use this type of DIMM...
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The processor's system bus frequency must be...
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| DDR400 |
800 MHz |
| DDR333 |
800 or 533 MHz (Note) |
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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.
Notes:
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When ECC Dimms are used, the Power-On Self Test (POST) will take longer to complete.
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Remove the AGP video card before installing or upgrading memory to avoid interference with the memory retention mechanism.
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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.
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DIMM Capacity
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Configuration
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DDR SDRAM Density
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DDR SDRAM Organization Front-side/Back-side
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Number of DDR SDRAM Devices
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| 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 |
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Note:
In the second column, “DS“ refers to double-sided memory modules (containing two rows of DDR SDRAM) and “SS“ refers to single-sided memory modules (containing one row of DDR SDRAM).
This applies to:
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