ASROCK Z87 Extreme4/TB4 Handbuch Seite 22

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.
1. For dual channel configuration, you always need to install identical (the same
2. It is unable to activate Dual Channel Memory Technology with only one or three
3. It is not allowed to install a DDR or DDR2 memory module into a DDR3 slot;
Dual Channel Memory Configuration
Priority
1
2
3
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.
20
brand, speed, size and chip-type) DDR3 DIMM pairs.
memory module installed.
otherwise, this motherboard and DIMM may be damaged.
DDR3_A1 DDR3_A2
Populated
Populated
Populated Populated
DDR3_B1 DDR3_B2
Populated
Populated
Populated Populated