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This motherboard comes with two Double Data Rate 4 (DDR4) Small Outline Dual
Inline Memory Modules (SO-DIMM) sockets. The gure illustrates the location of
the DDR4 SO-DIMM sockets:
Installing a DIMM
To install a DIMM To remove a DIMM
3
1.4 System memory
Channel Sockets
Channel A DIMM_A
Channel B DIMM_B
• You may install varying memory sizes in Channel A and Channel B. The system
maps the total size of the lower-sized channel for the dual-channel conguration.
Any excess memory from the higher-sized channel is then mapped for single-
channel operation.
• Always install DIMMs with the same CAS latency. For optimal compatibility, we
recommend that you install memory modules of the same version or date code
(D/C) from the same vendor. Check with the retailer to get the correct memory
modules.
• The default memory operation frequency is dependent on its Serial Presence
Detect (SPD), which is the standard way of accessing information from a memory
module. Under the default state, some memory modules for overclocking may
operate at a lower frequency than the vendor-marked value.
• For system stability, use a more efcient memory cooling system to support a full
memory load (2 DIMMs).
• Refer to www.asus.com for the latest Memory QVL (Qualied Vendors List).
Chapter 1: Product Introduction