English – ASRock Z87 OC Formula__ac User Manual
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Z87 OC Formula/ac / Z87 OC Formula
2.3 Installing Memory Modules (DIMM)
This motherboard provides four 240-pin DDR3 (Double Data Rate 3) DIMM slots,
and supports Dual Channel Memory Technology.
Dual Channel Memory Configuration
The DIMM only fits in one correct orientation. It will cause permanent damage to the
motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.
Priority
DDR3_A1
DDR3_A2
DDR3_B1
DDR3_B2
1
Populated
Populated
2
Populated
Populated
3
Populated
Populated
Populated
Populated
1. For dual channel configuration, you always need to install identical (the same brand,
speed, size and chip-type) DDR3 DIMM pairs.
2. It is unable to activate Dual Channel Memory Technology with only one or three memory
module installed.
3. It is not allowed to install a DDR or DDR2 memory module into a DDR3 slot; otherwise,
this motherboard and DIMM may be damaged.