Intel I945P User Manual

Page 22

Installation

Page 3-6

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.

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.

• The four DIMM sockets are divided into two colors to help you identify the

channel pairs

. 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.

DDR2-A2 DIMM 2

DDR2-B2 DIMM 4

Dual Channel 2

Channel A

Channel B

Dual Channel 1

DDR2-A1 DIMM 1

(Optional)