Intel I945P specifications Installation 3-3 System Memory Configuration, Dual Channel interface

Installation

3-3 System Memory Configuration

The mainboard accommodates four 240-pin DDR2 DIMM sockets.

•Supports up to 4GB of 400/533/667MHz DDR2 SDRAM (2GB and 400/ 533MHz for i945PL chipset support only).

•Supports dual channel memory interface.

•Supports non-ECC memory and non-Registered DIMMs only.

•SPD (Serial Presence Detect) scheme for DIMM detection support.

•Supports configurations defined in the JEDEC DDR2 DIMM specification only.

Dual Channel interface:

•Dual channel memory access offers increased system performance. <Figure 6> shows the logical memory layout for channel A and channel B.

•For dual channel to operate, both channel must be populated with same amount of memory, preferably of the same type.

(Optional)

<Figure 6>

•The four DIMM sockets are divided into two colors to help you identify the channel pairs <Figure 7>. Each dual channel pair has the same color, e.g. DIMM1 and DIMM3. To obtain best performance, simply mount DIMM sockets of the same color.

Channel A

Channel B

DDR2-A1 DIMM 1	Dual Channel 1
DDR2-A2 DIMM 2

Dual Channel 2 (Optional)

DDR2-B2 DIMM 4

<Figure 7>

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