Chapter 2
11
2-3 Main Memory Configuration
This motherboard provides four 184pin Double Data Rate (DDR) Dual-In-line
Memory Modules (DIMM) slots, which supports PC 1600/PC2100/2700/3200 DDR
SDRAM modules up to 4GB. Install at least one DIMM module on the slots.
Memory modules can be installed on the slots in any order. You can install either
single- or double-sided modules to meet your own needs.
To install your DDR Modules please follow these steps below:
1. Unlock a DIMM socket by pressing the retaining clips outward. The DDR Modules
has only one notch at the center of module. The DDR module will only fit in the right
position.
2. Insert the DDR Module vertically into the DIMM slot, with the correct alignment.
Then push it in until the golden finger on the memory module is deeply inserted into
the socket.
3. The plastic clip on each side of the DIMM slot will automatically close to hold the
DDR Modules in place.
Chapter 2
12
Memory Channel Modes
Single Channel /
Virtual Single Channel
Dual Channel
DIMM Population
No restrictions
Matching DIMM pairs
Rank (Row) Size
Size of one side of the
DIMM populated in the
channel
(64MB – 512MB)
2x the size of one side of
the DIMM populated in the
channel (A or B)
(128MB – 1GB)
Number of Ranks (Rows)
8 maximum
4 maximum
Channel Size
64 bits
128 bits
Page Size
Size read from DIMM
(4KB, 8KB, 16KB)
2 x Size read from DIMM
(8KB, 16KB, 32KB)
Burst Length
4 or 8
4
Single Channel Mode
Single Channel (SC) mode is also referred to as Virtual Single Channel (VSC)
mode.
Note:
Memory channel speed determined by slowest DIMM populated in system
Dual Channel Mode
Memory Channel DIMM Slot Number
DIMM 1
Channel A
DIMM 2
DIMM 3
Channel B
DIMM 4