7
Memory
Main Memory
The motherboard has four dual inline memory module (DIMM) sockets. Minimum
memory size is 32 MB using unbuffered DIMMs; maximum memory size is 2
GB
using registered DIMMs. The BIOS automatically detects memory type, size, and
speed.
The motherboard supports the following memory features:
•
=
168-pin DIMMS with gold-plated contacts.
•
=
100 MHz PC/100 SDRAM only.
•
=
ECC (72-bit) 3.3 V memory only.
•
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Single or double-banked DIMMs in the following sizes:
Table 1
DIMM Size
ECC Configuration
Unbuffered/Registered
32 MB
4 Mbit x 72
Unbuffered Only
64 MB
8 Mbit x 72
Both
128 MB
16 Mbit x 72
Both
256 MB
32 Mbit x 72
Both
512 MB
64 Mbit x 72
Registered Only
Memory can be installed in one, two, three or four sockets. Memory size can vary
between the sockets. Memory should be added in order from slot 1 to slot 4.
SDRAM
Synchronous DRAM (SDRAM) improves memory performance through memory
access that is synchronous with the memory clock. This simplifies the timing design
and increases memory speed because all timing is dependent on the number of
memory clock cycles.
NOTE:
To function properly, SDRAM DIMMS must meet the PC/100, 100 MHz.
ECC Memory
Error checking and correcting (ECC) memory detects multiple-bit errors and corrects
single-bit errors.
