ASRock A320M Pro4 R2.0 Quick Installation Guide - Page 25

Installing Memory Modules DIMM

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2.3 Installing Memory Modules (DIMM) X370M Pro4 R2.0 AB350M Pro4 R2.0 A320M Pro4 R2.0 This motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots, and supports Dual Channel Memory Technology. 1. For dual channel configuration, you always need to install identical (the same brand, speed, size and chip-type) DDR4 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, DDR2 or DDR3 memory module into a DDR4 slot; otherwise, this motherboard and DIMM may be damaged. DDR4 UDIMM Maximum Frequency Support A-Series APUs: UDIMM Memory Slot A1 A2 B1 B2 - SR - - - DR - - - SR - SR - DR - DR SR SR SR SR SR/DR DR SR/DR DR Frequency (Mhz) 2400 2400 2400 2133 1866 1866 Ryzen Series CPUs (Pinnacle Ridge): UDIMM Memory Slot A1 A2 B1 B2 - SR - - - DR - - - SR - SR - DR - DR SR SR SR SR SR/DR DR SR/DR DR Frequency (Mhz) 2667 2400 2667 2400 2133 1866 English 23

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23
English
X370M Pro4 R2.0
AB350M Pro4 R2.0
A320M Pro4 R2.0
2.3
Installing Memory Modules (DIMM)
Tis motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,
and supports Dual Channel Memory ³echnology.
DDR4 UDIMM Maximum Frequency Support
A-Series APUs:
Ryzen Series CPUs (Pinnacle Ridge):
1. ³or dual channel conFguration, you always need to install identical (the same
brand, speed, size and chip-type) DDR4 DIMM pairs.
2. It is unable to activate Dual Channel Memory ±echnology with only one or three
memory module installed.
3. It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4
slot; otherwise, this motherboard and DIMM may be damaged.
UDIMM Memory Slot
Frequency
(Mhz)
A1
A2
B1
B2
-
SR
-
-
2667
-
DR
-
-
2400
-
SR
-
SR
2667
-
DR
-
DR
2400
SR
SR
SR
SR
2133
SR/DR
DR
SR/DR
DR
1866
UDIMM Memory Slot
Frequency
(Mhz)
A1
A2
B1
B2
-
SR
-
-
2400
-
DR
-
-
2400
-
SR
-
SR
2400
-
DR
-
DR
2133
SR
SR
SR
SR
1866
SR/DR
DR
SR/DR
DR
1866