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System Memory Features
The Intel® Desktop Board D848PMB has two 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
- 2 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.
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(Note) |
800 or 533 MHz |
| DDR266 |
800, 533, or 400 MHz |
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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
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.
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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