Asrock 2core1333dvi-2.66g User Manual

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2.5 Installation of Memory Modules (DIMM)

2Core1333DVI-2.66G

motherboard provides four 240-pin DDRII (Double Data

Rate II) DIMM slots, and supports Dual Channel Memory Technology. For dual
channel configuration, you always need to install identical (the same brand,
speed, size and chip-type) DDRII DIMM pair in the slots of the same color. In other
words, you have to install identical DDRII DIMM pair in Dual Channel A (DDRII_1
and DDRII_3; Yellow slots; see p.10 No.7) or identical DDRII DIMM pair in Dual
Channel B

(DDRII_2 and DDRII_4; Orange slots; see p.10 No.8), so that Dual

Channel Memory Technology can be activated. This motherboard also allows
you to install four DDRII DIMMs for dual channel configuration, and please install
identical

DDRII DIMMs in all four slots. You may refer to the Dual Channel

Memory Configuration Table below.

Dual Channel Memory Configurations

(DS: Double Side, SS: Single Side)

1. If you want to install two memory modules, for optimal compatibility

and reliability, it is recommended to install them in the slots of the
same color. In other words, install them either in the set of yellow
slots (DDRII_1 and DDRII_3), or in the set of orange slots (DDRII_2
and DDRII_4).

2. If only one memory module or three memory modules are installed

in the DDRII DIMM slots on this motherboard, it is unable to activate
the Dual Channel Memory Technology.

3. If a pair of memory modules is NOT installed in the same Dual

Channel, for example, installing a pair of memory modules in DDRII_1
and DDRII_2, it is unable to activate the Dual Channel Memory
Technology .

4. It is not allowed to install a DDR memory module into DDRII slot;

otherwise, this motherboard and DIMM may be damaged.

DDRII_1 DDRII_2 DDRII_3 DDRII_4
(Yellow Slot) (Orange Slot) (Yellow Slot) (Orange Slot)

2 memory modules SS

2 memory modules DS

2 memory modules X

4 memory modules SS