ASROCK P43TWINS Installation Manual page 16

2.3 Installation of Memor y Modules (DIMM) 2.3 Installation of Memor 2.3 Installation of Memor
2.3 Installation of Memor 2.3 Installation of Memor
This motherboard provides four 240-pin DDR2 (Double Data Rate 2) DIMM slots and
two 240-pin DDR3 (Double Data Rate 3) 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) DDR2/DDR3 DIMM pair in
the slots of the same color. In other words, you have to install identical DDR2
DIMM pair in Dual Channel A (DDRII_A1 and DDRII_B1; Yellow slots; see p.2/3
No.5), identical DDR2 DIMM pair in Dual Channel B (DDRII_A2 and DDRII_B2;
Orange slots; see p.2/3 No.6), or identical DDR3 DIMM pair in Dual Channel C
(DDR3_A1 and DDR3_B1; Green slots; see p.2/3 No.7), so that Dual Channel Memory
Technology can be activated. This motherboard also allows you to install four DDR2
DIMMs for dual channel configuration, and please install identical DDR2 DIMMs in
all four slots. You may refer to the Dual Channel Memory Configuration Table below.
Dual Channel DDR2 Memory Configurations
(DS: Double Side, SS: Single Side)
2 memory modules SS
2 memory modules DS
2 memory modules X
2 memory modules X
4 memory modules SS
4 memory modules DS
Dual Channel DDR3 Memory Configurations
(DS: Double Side, SS: Single Side)
2 memory modules SS
2 memory modules DS
1. If you want to install two memory modules, for optimal compatibil-
ity and reliability, it is recommended to install them in the slots of
the same color. In other words, install them in the set of green
slots (DDR3_A1 and DDR3_B1), in the set of yellow slots
(DDRII_A1 and DDRII_B1), or in the set of orange slots (DDRII_A2
and DDRII_B2).
1 6 1 6 1 6
1 6 1 6
y Modules (DIMM) y Modules (DIMM) y Modules (DIMM)
y Modules (DIMM)
DDRII_A1 DDRII_A2
(Yellow Slot) (Orange Slot) (Yellow Slot)
X
X
SS
DS
SS
DS
DDR3_A1
(Green Slot)
ASRock Motherboard
DDRII_B1 DDRII_B2
(Orange Slot)
SS X
DS X
X SS
X DS
SS SS
DS DS
DDR3_B1
(Green Slot)
SS
DS