System Memory; Recommended Memory Configurations - Asus STRIX X99 Manual

1.1.4

System memory

The motherboard comes with eight (8) DDR4 (Double Data Rate 4) Quad Inline Memory
Modules (DIMM) slots.
A DDR4 module is notched differently from a DDR, DDR2, or DDR3 module. DO NOT
install a DDR, DDR2, or DDR3 memory module to the DDR4 slot.
Ensure to install at least one of the memory modules into the A1 * /B1 * /C1 * /D1 * slot.

Recommended memory configurations

ASUS STRIX X99 GAMING
1-5