D1271/D1291 CUV-LSV/CUV-LV User’s Manual 23
3.5 System Memory
This motherboard uses only Dual Inline Memory Modules (DIMMs). Four DIMM
sockets are available for 3.3Volt (power level) unbuffered or registered Synchronous
Dynamic Random Access Memory (SDRAM) of 16, 32, 64, 128, 256, or 512MB to
form a memory size between 32MB to 2GB. One side (with memory chips) of the
DIMM takes up one row on the motherboard. This motherboard also supports NEC’s
Virtual Channel SDRAMs and Enhanced Memory System’s High-speed DRAMs.
IMPORTANT (see General DIMM Notes below for more)
•
SDRAMs used must be compatible with the current Intel PC133 SDRAM
specifications.
•
DO NOT attempt to mix registered SDRAMs with VCM SDRAMs.
Install memory in any combination as follows:
DIMM Location
168-pin DIMM
Total Memory
Socket 1 (Rows 0&1)
SDRAM 16, 32, 64, 128, 256, 512MB
x1
Socket 2 (Rows 2&3)
SDRAM 16, 32, 64, 128, 256, 512MB
x1
Socket 3 (Rows 4&5)
SDRAM 16, 32, 64, 128, 256, 512MB
x1
Socket 4 (Rows 6&7)
SDRAM 16, 32, 64, 128, 256, 512MB
x1
Total System Memory (Max. 2GB)
=
3.5.1 General DIMM Notes
•
DIMMs that have more than 18 chips are not supported on this motherboard.
•
For the system CPU bus to operate
100
MHz/133MHz, use only PC100-/PC133-
compliant DIMMs.
• Motherboards support Serial Presence Detect (SPD) DIMMs. This is the
memory of choice for best performance vs. stability.
•
SDRAM chips are generally thinner with higher pin density than EDO (Extended
Data Output) chips.
•
BIOS shows SDRAM memory on bootup screen.
•
Single-sided DIMMs come in 16, 32, 64,128, 256MB; double-sided come in 32, 64,
128, 256, 512MB.
WARNING!
Make sure that the DIMM you use can handle the specified SDRAM
speeds, otherwise the computer does not boot.
System Memory
3. H/W SETUP
Summary of Contents for D1271
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