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2.5 Installation of Memory Modules (DIMM)
This motherboard provides four 240-pin DDR3 (Double Data Rate 3) DIMM
slots, and supports Dual Channel Memory Technology. For dual channel con-
fi guration, you always need to install identical (the same brand, speed, size
and chip-type) DDR3 DIMM pair in the slots: You have to install identical
DDR3 DIMMs in Dual Channel A (DDR3_A1 and DDR3_B1; Black slots; see p.2
No. 6) or identical DDR3 DIMMs in Dual Channel B (DDR3_A2 and DDR3_
B2; Black slots; see p.2 No. 7), so that Dual Channel Memory Technology can
be activated. This motherboard also allows you to install four DDR3 DIMMs
for dual channel confi guration, please install identical DDR3 DIMMs in all four
slots. You may refer to the Dual Channel Memory Confi guration Table below.
Dual Channel Memory Confi guration
DDR3_A1
(Black Slot)
(1)
-
(2)
Populated
(3)*
Populated
*
For confi guration (3), please install identical DDR3 DIMMs in all four
slots.
1.
If you want to install two memory modules, for optimal compatibility
and reliability, it is recommended to install them in the slots: DDR3_
A1 and DDR3_B1, or DDR3_A2 and DDR3_B2.
2.
If only one memory module or three memory modules are installed
in the DDR3 DIMM slots on this motherboard, it is unable to activate
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
DDR3_A1 and DDR3_A2, it is unable to activate Dual Channel
Memory Technology.
4.
It is not allowed to install a DDR or DDR2 memory module into
DDR3 slot; otherwise, this motherboard and DIMM may be dam-
aged.
5.
Some DDR3 1GB double-sided DIMMs with 16 chips may not work
on this motherboard. It is not recommended to install them on this
motherboard.
6.
For optimal compatibility and stability while overclocking memory
frequency, it is recommended to install one memory module on
DDR3_B2 slot or two memory modules on DDR3_A2 and DDR3_
B2 slots.
ASRock Z77 Extreme3 Motherboard
DDR3_A2
DDR3_B1
DDR3_B2
(Black Slot)
(Black Slot)
(Black Slot)
Populated
-
Populated
-
Populated
Populated
Populated
Populated
-
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