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System memory
Overview
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:
•
•
•
•
Visit the ASUS website at www.asus.com for the latest QVL.
1‑8
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.
Always install the DIMMS with the same CAS Latency. For an optimum compatibility,
we recommend that you install memory modules of the same version or data code
(D/C) from the same vendor. Check with the vendor to get the correct memory
modules.
According to Intel
CPU spec, DIMM voltage below 1.5V is recommended to protect
®
the CPU.
Due to the memory address limitation on 32‑bit Windows
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
‑
Use a maximum of 3 GB system memory if you are using a 32‑bit Windows
‑
I nstall a 64‑bit Windows
motherboard.
‑
F or more details, refer to the Microsoft
com/kb/929605/en‑us.
Channel
Channel A
DIMM_A1 & DIMM_A2
Channel B
DIMM_B1 & DIMM_B2
OS if you want to install 4GB or more on the
®
support site at http://support.microsoft.
®
Chapter 1: Product introduction
Sockets
OS, when you install 4GB
®
®
OS.
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