System Memory - Asus PRIME B660M-A WIFI D4 Manual

1.4

System memory

This motherboard comes with four Double Data Rate 4 (DDR4) Dual Inline Memory Module
(DIMM) sockets. The figure illustrates the location of the DDR4 DIMM sockets:
•
•
•
•
•
•
•
Recommended memory configurations
DIMM_A2
1-10
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
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 configuration. Any
excess memory from the higher-sized channel is then mapped for single-channel
operation.
A DDR4 memory 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.
Intel 12 Gen Processors support 3200/3000/2933/2800/2666/2400/2133 natively.
® th
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 efficient memory cooling system to support a full
memory load.
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.
Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and data rate
support depends on the CPU types.
DIMM_A2
DIMM_B2
Channel
Channel A DIMM_A1 & DIMM_A2
Channel B DIMM_B1 & DIMM_B2
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
Chapter 1: Product Introduction
Sockets