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Intel Desktop Board D915PLWD Technical Product Specification
1.4 System Memory
The board has two DIMM sockets and support the following memory features:
•
2.5 V (only) 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: 128 MB
•
Non-ECC DIMMs
•
Serial Presence Detect
•
DDR 400 MHz and DDR 333 MHz SDRAM DIMMs
Table 3 lists the supported system bus frequency and memory speed combinations.
Table 3.
Supported System Bus Frequency and Memory Speed Combinations
To use this type of DIMM...
DDR 400
(Note)
DDR 333
Note:
When using an 800 MHz system bus frequency processor, DDR 333 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.
Table 4 lists the supported DIMM configurations.
Table 4.
Supported Memory Configurations
DIMM
Capacity
Configuration
128 MB
SS
256 MB
SS
256 MB
SS
512 MB
DS
512 MB
SS
512 MB
SS
1024 MB
SS
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).
16
The processor's system bus frequency must be...
800 MHz
800 or 533 MHz
SDRAM
SDRAM Organization
Density
Front-side/Back-side
256 Mbit
16 M x 16/empty
256 Mbit
32 M x 8/empty
512 Mbit
32 M x 16/empty
256 Mbit
32 M x 8/32 M x 8
512 Mbit
64 M x 8/empty
1 Gbit
64 M x 16/empty
1 Gbit
128 M x 8/empty
Number of SDRAM
Devices
4
8
4
16
8
4
8
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