ASROCK B550 PHANTOM GAMING 4 User Manual page 28

Ryzen Series APUs (Renoir):
UDIMM Memory Slot
A1 A2
- SR
- DR
- SR
- DR
SR SR
SR/DR DR
SR/DR SR/DR
SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label
DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label
22
Frequency
(Mhz)
B1 B2
- -
- -
- SR
- DR
SR SR
SR/DR DR
SR/DR SR/DR
3200
3200
3200
3200
2933
2667
2667