ASRock X370 KILLER SLI SOCKET AM4 AMD B350 4XDDR4 [27/175] Installing memory modules dimm

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X370 Killer SLI/ac / X370 Killer SLI

2.3 Installing Memory Modules (DIMM)

is motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,

and supports Dual Channel Memory Technology.

DDR4 UDIMM Maximum Frequency Support

A-Series APUs:

Ryzen CPUs:

SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label

DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label

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

1. For dual channel conguration, 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.

UDIMM Memory Slot

Frequency

(Mhz)

A1 A2 B1 B2

- SR - - 2667

- DR - - 2667

- SR - SR 2667

- DR - DR 2400-2667

SR SR SR SR 2133-2400

SR/DR DR SR/DR DR 1866-2133

Please note that only one cable should be used at a time in this step.

If you select AMD_FAN_LED1, please install ASRock utility "ASRock RGB LED".

If you select USB connector, please install AMD utility "SR3 Settings Soware".

*e diagram shown here are for reference only. Please refer to page 33 for the orientation of AMD Fan

LED Header (AMD_FAN_LED1) and page 30 for the orientation of AMD LED Fan USB Header (USB_5).