System Memory - Asus PRIME B550M-K ARGB Manual

1.4

System memory

This motherboard comes with two Double Data Rate 4 (DDR4) Dual Inline Memory Module
(DIMM) sockets. The figure illustrates the location of the DDR4 DIMM sockets:
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.
• 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.
• You may install 2 GB, 4 GB, 8 GB, 16 GB, and 32 GB unbuffered DDR4 DIMMs into
the DIMM sockets.
• 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.
• Supported memory types, data rate (speed), and number of DRAM modules vary
depending on the CPU and memory configuration, for more information please refer
to CPU/Memory Support list under the Support tab of product information site or visit
https://www.asus.com/support/.
Recommended memory configurations
DIMM_B
PRIME B550M-K ARGB
DIMM_A
DIMM_B
DIMM_A
Channel
Channel A
Channel B
DIMM_A
DIMM_B
Sockets
DIMM_A
DIMM_B
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