Motherboard Description
1.5 Main Memory
The motherboard has two DIMM sockets. SDRAM can be installed in one or both sockets. The
motherboard supports only DIMMs with serial presence detect (SPD) data structures.
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Using the SPD data structure, programmed into an EPROM on the DIMM, the BIOS can
determine the SDRAM's size and speed. Minimum memory size is 16 MB; maximum memory
size is 512 MB. Memory size can vary between sockets.
The motherboard supports the following memory features:
? 168-pin DIMMs with gold-plated contacts
? 66 MHz, 4 Clock SDRAM
? 64-bit memory (non-error checking and correcting)
? 3.3 V memory only
? Unbuffered single- or double-sided DIMMs in the following sizes:
DIMM SizeConfiguration
16 MB2 Mbit x 64
32 MB4 Mbit x 64
64 MB8 Mbit x 64
128 MB16 Mbit x 64
256 MB32 Mbit x 64
/NOTE
All memory components and DIMMs used with the OC440LX motherboard must comply with the
PC SDRAM specifications. These include the PC SDRAM Specification (memory component
specific) and the PC Unbuffered DIMM Specification. When using a DIMM with the SPD data
structure, the DIMM must comply with the PC Serial Presence Detect Specification. You can
access these documents through the Internet at:
http://www.intel.com/design/pcisets/memory/
See Section 6.2 for information about these specifications.
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ACEC
