ASROCK X300M-STX, Manual

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X300M-STX
2.3 Installing Memory Modules (SO-DIMM)
This motherboard provides two 260-pin DDR4 (Double Data Rate 4) SO-DIMM
slots.
DDR4 SO-DIMM Maximum Frequency Support
Ryzen Series APUs (Renoir):
Ryzen Series CPUs (Raven Ridge):
SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label
DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label
SO-DIMM Memory Slot
Frequency
(Mhz)
A1 B1
- SR 2933
SR - 2933
- DR 2667
DR - 2667
SR SR 2667
DR DR 2400
It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4 slot;
otherwise, this motherboard and SO-DIMM may be damaged.
UDIMM Memory Slot
Frequency
(Mhz)
A1 B1
SR - 3200
- SR 3200
DR - 3200
- DR 3200
SR SR 3200
DR DR 3200